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SASS/LESS/COMPASS Tips, Tricks & Best Practices 1 Thursday, March 15, 12

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SASS/LESS/COMPASS Tips, Tricks & Best Practices Slides bit.ly/SassLessTips 1 Thursday, March 15, 12

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TOPICS 2 Thursday, March 15, 12

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TOPICS VARIABLES 2 Thursday, March 15, 12

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TOPICS VARIABLES NESTING 2 Thursday, March 15, 12

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TOPICS VARIABLES NESTING OPERATIONS 2 Thursday, March 15, 12

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TOPICS VARIABLES NESTING OPERATIONS EXTEND 2 Thursday, March 15, 12

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TOPICS VARIABLES NESTING OPERATIONS EXTEND FILE ORGANIZATION 2 Thursday, March 15, 12

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TOPICS VARIABLES NESTING OPERATIONS EXTEND FILE ORGANIZATION CONTROL LOGIC 2 Thursday, March 15, 12

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TOPICS VARIABLES NESTING OPERATIONS EXTEND FILE ORGANIZATION CONTROL LOGIC ADVANCED FEATURES 2 Thursday, March 15, 12

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TOPICS VARIABLES NESTING OPERATIONS EXTEND FILE ORGANIZATION CONTROL LOGIC ADVANCED FEATURES SASS VS. LESS 2 Thursday, March 15, 12

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TOPICS VARIABLES NESTING OPERATIONS EXTEND FILE ORGANIZATION CONTROL LOGIC ADVANCED FEATURES SASS VS. LESS SCSS VS. SASS SYNTAX 2 Thursday, March 15, 12

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TOPICS VARIABLES NESTING OPERATIONS EXTEND FILE ORGANIZATION CONTROL LOGIC ADVANCED FEATURES SASS VS. LESS SCSS VS. SASS SYNTAX CSS3 FEATURES 2 Thursday, March 15, 12

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TOPICS VARIABLES NESTING OPERATIONS EXTEND FILE ORGANIZATION CONTROL LOGIC ADVANCED FEATURES SASS VS. LESS SCSS VS. SASS SYNTAX CSS3 FEATURES 2 Thursday, March 15, 12

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WE CSS 3 Thursday, March 15, 12

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LESS SASS less Sass 4 Thursday, March 15, 12

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// variables @default-color: #000 // variables $default-color: #000 LESS SASS less Sass 4 Thursday, March 15, 12

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// variables @default-color: #000 // variables $default-color: #000 LESS SASS // mixins =foo($color: #fff) color: $color .bar +foo($default-color) // mixins .foo (@color: #fff) { color: @color; } .bar { .foo(@default-color); } less Sass 4 Thursday, March 15, 12

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// variables @default-color: #000 // variables $default-color: #000 LESS SASS // mixins =foo($color: #fff) color: $color .bar +foo($default-color) // nesting h1 color: #000 a font-weight: normal &:hover font-weight: bold // mixins .foo (@color: #fff) { color: @color; } .bar { .foo(@default-color); } // nesting h1 { color: #000; a { font-weight: normal; &:hover { font-weight: bold; } } } less Sass 4 Thursday, March 15, 12

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VARIABLES 5 Thursday, March 15, 12

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h1 { font-family: “Gill Sans”, sans-serif; font-size: 2em; color: #222; } h2 { font-family: “Gill Sans”, sans-serif; font-size: 1.25em; color: #666; } p { font-family: Georgia, serif; font-size: 1em; color: #666; } CSS 6 Thursday, March 15, 12

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h1 { font-family: “Gill Sans”, sans-serif; font-size: 2em; color: #222; } h2 { font-family: “Gill Sans”, sans-serif; font-size: 1.25em; color: #666; } p { font-family: Georgia, serif; font-size: 1em; color: #666; } CSS SCSS $baseline-size: 1em; $baseline-color: #666; $header-font: "Gill Sans", sans-serif; $body-font: Georgia, serif; h1 { font-family: $header-font; font-size: $baseline-size * 2; color: $baseline-color - #444; } h2 { font-family: $header-font; font-size: $baseline-size * 1.25; color: $baseline-color; } p { font-family: $body-font; font-size: $baseline-size; color: $baseline-color; } 6 Thursday, March 15, 12

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$page-width: 960px; $page-padding: 70px; .foo { width: $page-width - $page-padding * 2; padding: 0 $page-padding; margin-top: 37px; } NUMBERS • Use name to provide more context • Always equation if a number is calculated • If not a variable, numbers should be considered arbitrary values SCSS 7 Thursday, March 15, 12

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$baby-blue: #ebf7fc; $lightest-blue: #dbeef5; $lighter-blue: #b5dff1; $light-blue: #7bcbed; $blue: #39b2e5; $dark-blue: #0091ce; $darker-blue: #0073a4; $lightest-gray: #f3f3f3; $lighter-gray: #dedede; $light-gray: #b3b3b3; $gray: #838383; $dark-gray: #525252; $darker-gray: #202020; COLORS • Build a library of common brand colors • Add to 147 default named CSS colors SCSS 8 Thursday, March 15, 12

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$serif-default: Cambria, "Hoefler Text", Utopia, "Liberation Serif", "Nimbus Roman No9 L Regular", Times, "Times New Roman", serif; $serif-alt: Constantia, "Lucida Bright", Lucidabright, "Lucida Serif", Lucida, "DejaVu Serif", "Bitstream Vera Serif", "Liberation Serif", Georgia, serif; $sans-serif-default: Frutiger, "Frutiger Linotype", Univers, Calibri, "Gill Sans", "Gill Sans MT", "Myriad Pro", Myriad, "DejaVu Sans Condensed", "Liberation Sans", "Nimbus Sans L", Tahoma, Geneva, "Helvetica Neue", Helvetica, Arial, sans-serif; FONTS • Build a library of common font stacks • Just a list of strings (separated by space or comma) http://www.sitepoint.com/eight-definitive-font-stacks/ SCSS 9 Thursday, March 15, 12

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$button-primary-label-color: white; $button-primary-base-color: lighten($blue, 20%); $button-primary-highlight-color: lighten($blue, 15%); $button-primary-border-color: lighten($blue, 10%); $button-primary-shadow-color: $light-gray; $button-secondary-label-color: black; $button-secondary-base-color: darken($gray, 10%); $button-secondary-highlight-color: darken($gray, 15%); $button-secondary-border-color: darken($gray, 20%); $button-secondary-shadow-color: $light-gray; .button-primary { padding: 6px 10px; font-family: "Lucida Grande", sans-serif; font-size: 12px; color: $button-primary-label-color; text-shadow: $button-primary-border-color 0 -1px 0; background-image: -webkit-linear-gradient( bottom, $button-primary-base-color 60%, $button-primary-highlight-color ); border: 1px solid $button-primary-border-color; border-radius: 4px; box-shadow: 0 2px 3px $button-primary-shadow-color; } SKINNING • Variables can declared with other variables • Use more semantic names for easy skinning • Update base, changes cascade SCSS 10 Thursday, March 15, 12

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Most people use dashes $my-var 11 Thursday, March 15, 12

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some prefer underscores $my_var Most people use dashes $my-var 11 Thursday, March 15, 12

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you can use both! == some prefer underscores $my_var Most people use dashes $my-var 11 Thursday, March 15, 12

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NESTING 12 Thursday, March 15, 12

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CSS SASS 13 Thursday, March 15, 12

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.article { width: 100%; } .article h1 { font-size: 26px; } .article .author { font-style: italic; } .article width: 100% h1 font-size: 26px .author font-style: italic CSS SASS 13 Thursday, March 15, 12

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.article { width: 100%; } .article h1 { font-size: 26px; } .article .author { font-style: italic; } .article width: 100% h1 font-size: 26px .author font-style: italic CSS SASS 13 Thursday, March 15, 12

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.article { width: 100%; } .article h1 { font-size: 26px; } .article .author { font-style: italic; } .article width: 100% h1 font-size: 26px .author font-style: italic CSS SASS 13 Thursday, March 15, 12

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.article { width: 100%; } .article h1 { font-size: 26px; } .article .author { font-style: italic; } .article width: 100% h1 font-size: 26px .author font-style: italic CSS SASS 13 Thursday, March 15, 12

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.article { width: 100%; } .article h1 { font-size: 26px; } .article .author { font-style: italic; } .article width: 100% h1 font-size: 26px .author font-style: italic CSS SASS @media screen and (min-width: 480px) width: 480px h1 font-size: 40px @media screen and (min-width: 480px) { .article { width: 480px; } .article h1 { font-size: 40px; } } 13 Thursday, March 15, 12

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HOW DEEP CAN I GO? Sass nesting != HTML nesting 14 Thursday, March 15, 12

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CSS SASS 15 Thursday, March 15, 12

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.subset-section background-color: #fff width: 960px .subset-skus width: 790px .subset-selection float: left width: 790px .registrant-needs margin-bottom: 10px text-align: right .subset-attributes width: 430px float: left .subset-pricing display: block text-align: right .price-special font-size: 11px .currency font-size: 16px CSS SASS 15 Thursday, March 15, 12

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.subset-section { background-color: white; width: 960px; } .subset-section .subset-skus { width: 790px; } .subset-section .subset-skus .subset-selection { float: left; width: 790px; } .subset-section .subset-skus .subset-selection .registrant-needs { margin-bottom: 10px; text-align: right; } .subset-section .subset-skus .subset-selection .registrant-needs .subset- attributes { width: 430px; float: left; } .subset-section .subset-skus .subset-selection .registrant-needs .subset- attributes .subset-pricing { display: block; text-align: right; } .subset-section .subset-skus .subset-selection .registrant-needs .subset- attributes .subset-pricing .price-special { font-size: 11px; } .subset-section .subset-skus .subset-selection .registrant-needs .subset- attributes .subset-pricing .price-special .currency { font-size: 16px; } .subset-section background-color: #fff width: 960px .subset-skus width: 790px .subset-selection float: left width: 790px .registrant-needs margin-bottom: 10px text-align: right .subset-attributes width: 430px float: left .subset-pricing display: block text-align: right .price-special font-size: 11px .currency font-size: 16px CSS SASS 15 Thursday, March 15, 12

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div { color: black; } div .foo { color: black; } div .foo { color: black; } div + .foo { color: black; } div.bar { color: black; } div:hover { color: black; } .no-borderradius div { color: black; } .parent div .child { color: black; } div color: black .foo color: black & .foo color: black + .foo color: black &.bar color: black &:hover color: black .no-borderradius & color: black .parent & .child color: black CSS SASS 16 Thursday, March 15, 12

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div { color: black; } div .foo { color: black; } div .foo { color: black; } div + .foo { color: black; } div.bar { color: black; } div:hover { color: black; } .no-borderradius div { color: black; } .parent div .child { color: black; } div color: black .foo color: black & .foo color: black + .foo color: black &.bar color: black &:hover color: black .no-borderradius & color: black .parent & .child color: black CSS SASS 16 Thursday, March 15, 12

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div { color: black; } div .foo { color: black; } div .foo { color: black; } div + .foo { color: black; } div.bar { color: black; } div:hover { color: black; } .no-borderradius div { color: black; } .parent div .child { color: black; } div color: black .foo color: black & .foo color: black + .foo color: black &.bar color: black &:hover color: black .no-borderradius & color: black .parent & .child color: black CSS SASS 16 Thursday, March 15, 12

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div { color: black; } div .foo { color: black; } div .foo { color: black; } div + .foo { color: black; } div.bar { color: black; } div:hover { color: black; } .no-borderradius div { color: black; } .parent div .child { color: black; } div color: black .foo color: black & .foo color: black + .foo color: black &.bar color: black &:hover color: black .no-borderradius & color: black .parent & .child color: black CSS SASS 16 Thursday, March 15, 12

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div { color: black; } div .foo { color: black; } div .foo { color: black; } div + .foo { color: black; } div.bar { color: black; } div:hover { color: black; } .no-borderradius div { color: black; } .parent div .child { color: black; } div color: black .foo color: black & .foo color: black + .foo color: black &.bar color: black &:hover color: black .no-borderradius & color: black .parent & .child color: black CSS SASS 16 Thursday, March 15, 12

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div { color: black; } div .foo { color: black; } div .foo { color: black; } div + .foo { color: black; } div.bar { color: black; } div:hover { color: black; } .no-borderradius div { color: black; } .parent div .child { color: black; } div color: black .foo color: black & .foo color: black + .foo color: black &.bar color: black &:hover color: black .no-borderradius & color: black .parent & .child color: black CSS SASS 16 Thursday, March 15, 12

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div { color: black; } div .foo { color: black; } div .foo { color: black; } div + .foo { color: black; } div.bar { color: black; } div:hover { color: black; } .no-borderradius div { color: black; } .parent div .child { color: black; } div color: black .foo color: black & .foo color: black + .foo color: black &.bar color: black &:hover color: black .no-borderradius & color: black .parent & .child color: black CSS SASS 16 Thursday, March 15, 12

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div { color: black; } div .foo { color: black; } div .foo { color: black; } div + .foo { color: black; } div.bar { color: black; } div:hover { color: black; } .no-borderradius div { color: black; } .parent div .child { color: black; } div color: black .foo color: black & .foo color: black + .foo color: black &.bar color: black &:hover color: black .no-borderradius & color: black .parent & .child color: black CSS SASS 16 Thursday, March 15, 12

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div { color: black; } div .foo { color: black; } div .foo { color: black; } div + .foo { color: black; } div.bar { color: black; } div:hover { color: black; } .no-borderradius div { color: black; } .parent div .child { color: black; } div color: black .foo color: black & .foo color: black + .foo color: black &.bar color: black &:hover color: black .no-borderradius & color: black .parent & .child color: black CSS SASS 16 Thursday, March 15, 12

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div { color: black; } div .foo { color: black; } div .foo { color: black; } div + .foo { color: black; } div.bar { color: black; } div:hover { color: black; } .no-borderradius div { color: black; } .parent div .child { color: black; } div color: black .foo color: black & .foo color: black + .foo color: black &.bar color: black &:hover color: black .no-borderradius & color: black .parent & .child color: black CSS SASS 16 Thursday, March 15, 12

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NESTING • group styles together • avoid selector duplication • parent selector • keep your code DRY Sass Nesting != HTML Nesting danger 17 Thursday, March 15, 12

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MIXINS A couple of our favorites 18 Thursday, March 15, 12

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@mixin my-button($color, $margin: 5px) { background-color: $color; font-size: 1.2em; margin: $margin * 2; } .button { @include my-button(blue); color: white; } .button { background-color: blue; font-size: 1.2em; margin: 10px; color: white; } MIXINS • Reusable elements • Parameterizable (use reasonable defaults) • SASS & LESS have different approaches SCSS CSS 19 Thursday, March 15, 12

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TRANSITION SETUP • Opacity transition for modern browsers • Hide/show for IE8 20 Thursday, March 15, 12

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=transition-setup($value) opacity: $value .ie8 & @if $value >= 0.5 display: block @else display: none TRANSITION SETUP • Opacity transition for modern browsers • Hide/show for IE8 Sass 20 Thursday, March 15, 12

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=transition-setup($value) opacity: $value .ie8 & @if $value >= 0.5 display: block @else display: none TRANSITION SETUP • Opacity transition for modern browsers • Hide/show for IE8 Sass .hidden-element +transition-setup(0) .visible-element +transition-setup(.5) 20 Thursday, March 15, 12

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=transition-setup($value) opacity: $value .ie8 & @if $value >= 0.5 display: block @else display: none TRANSITION SETUP • Opacity transition for modern browsers • Hide/show for IE8 Sass .hidden-element { opacity: 0; } .ie8 .foo { display: none; } .visible-element { opacity: 0.5; } .ie8 .bar { display: block; } CSS .hidden-element +transition-setup(0) .visible-element +transition-setup(.5) 20 Thursday, March 15, 12

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$geoforms-small-text: 1em !default $geoforms-medium-text: 1.2em !default =geoforms ul line-height: 1 padding-left: 0 margin: 0 font-size: $geoforms-medium-text color: $gray-dark li display: block padding: 6px 0 4px 120px border-top: 1px solid #eee overflow: hidden &:first-child border-top: none label line-height: 20px +text-shadow($white 0 1px 0) &:first-child float: left width: 100px margin-left: -120px font-weight: bold padding-left: 10px // 75 more lines of form awesomeness… SHARING • Extract common elements • Reuse them in your project or between projects • Distribute it! Sass 21 Thursday, March 15, 12

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=my-btn($color) color: $color +my-btn(red) @mixin my-btn($color) { color: $color; } @include my-btn(red); SCSS Sass 22 Thursday, March 15, 12

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@EXTEND 23 Thursday, March 15, 12

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h1 { font-family: “Gill Sans”, sans-serif; font-size: 2em; color: #222; } h2 { @extend h1; font-size: 1.25em; } h1, h2 { font-family: “Gill Sans”, sans-serif; font-size: 2em; color: #222; } h2 { font-size: 1.25em; } EXTEND • Allows reuse of CSS using selector inheritance • Sort of like a mixin in practice SCSS CSS 24 Thursday, March 15, 12

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.my-layout { margin: 1px; h1 { font-weight: bold; font-size: 2em; } h2 { @extend h1; font-size: 1.5em; } } .home-page { @extend .my-layout; } .about-page { @extend .my-layout; } .login-page { @extend .my-layout; } .register-page { @extend .my-layout; } SCSS Note: a fix was pushed shortly after this presentation to reduce the number of selectors created by @extend: https://github.com/nex3/sass/commit/8f4869e608e70d7f468bb463ebfe7a939d834e27 25 Thursday, March 15, 12

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.my-layout { margin: 1px; h1 { font-weight: bold; font-size: 2em; } h2 { @extend h1; font-size: 1.5em; } } .home-page { @extend .my-layout; } .about-page { @extend .my-layout; } .login-page { @extend .my-layout; } .register-page { @extend .my-layout; } SCSS .my-layout, .home-page, .about-page, .login-page, .register-page { margin: 1px; } .my-layout h1, .home-page h1, .about-page h1, .login-page h1, .register-page h1, .my-layout h2, .home-page .my-layout h2, .my-layout .home-page h2, .about-page .my-layout h2, .my- layout .about-page h2, .login-page .my-layout h2, .my- layout .login-page h2, .register-page .my-layout h2, .my- layout .register-page h2, .my-layout .home-page h2, .home- page .my-layout h2, .home-page h2, .about-page .home-page h2, .home-page .about-page h2, .login-page .home-page h2, .home- page .login-page h2, .register-page .home-page h2, .home- page .register-page h2, .my-layout .about-page h2, .about- page .my-layout h2, .home-page .about-page h2, .about-page .home- page h2, .about-page h2, .login-page .about-page h2, .about- page .login-page h2, .register-page .about-page h2, .about- page .register-page h2, .my-layout .login-page h2, .login- page .my-layout h2, .home-page .login-page h2, .login-page .home- page h2, .about-page .login-page h2, .login-page .about-page h2, .login-page h2, .register-page .login-page h2, .login- page .register-page h2, .my-layout .register-page h2, .register- page .my-layout h2, .home-page .register-page h2, .register- page .home-page h2, .about-page .register-page h2, .register- page .about-page h2, .login-page .register-page h2, .register- page .login-page h2, .register-page h2 { font-weight: bold; font-size: 2em; } .my-layout h2, .home-page h2, .about-page h2, .login-page h2, .register-page h2 { font-size: 1.5em; } CSS Note: a fix was pushed shortly after this presentation to reduce the number of selectors created by @extend: https://github.com/nex3/sass/commit/8f4869e608e70d7f468bb463ebfe7a939d834e27 25 Thursday, March 15, 12

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.my-layout { margin: 1px; h1 { font-weight: bold; font-size: 2em; } h2 { @extend h1; font-size: 1.5em; } } .home-page { @extend .my-layout; } .about-page { @extend .my-layout; } .login-page { @extend .my-layout; } .register-page { @extend .my-layout; } SCSS .my-layout, .home-page, .about-page, .login-page, .register-page { margin: 1px; } .my-layout h1, .home-page h1, .about-page h1, .login-page h1, .register-page h1, .my-layout h2, .home-page .my-layout h2, .my-layout .home-page h2, .about-page .my-layout h2, .my- layout .about-page h2, .login-page .my-layout h2, .my- layout .login-page h2, .register-page .my-layout h2, .my- layout .register-page h2, .my-layout .home-page h2, .home- page .my-layout h2, .home-page h2, .about-page .home-page h2, .home-page .about-page h2, .login-page .home-page h2, .home- page .login-page h2, .register-page .home-page h2, .home- page .register-page h2, .my-layout .about-page h2, .about- page .my-layout h2, .home-page .about-page h2, .about-page .home- page h2, .about-page h2, .login-page .about-page h2, .about- page .login-page h2, .register-page .about-page h2, .about- page .register-page h2, .my-layout .login-page h2, .login- page .my-layout h2, .home-page .login-page h2, .login-page .home- page h2, .about-page .login-page h2, .login-page .about-page h2, .login-page h2, .register-page .login-page h2, .login- page .register-page h2, .my-layout .register-page h2, .register- page .my-layout h2, .home-page .register-page h2, .register- page .home-page h2, .about-page .register-page h2, .register- page .about-page h2, .login-page .register-page h2, .register- page .login-page h2, .register-page h2 { font-weight: bold; font-size: 2em; } .my-layout h2, .home-page h2, .about-page h2, .login-page h2, .register-page h2 { font-size: 1.5em; } CSS danger Note: a fix was pushed shortly after this presentation to reduce the number of selectors created by @extend: https://github.com/nex3/sass/commit/8f4869e608e70d7f468bb463ebfe7a939d834e27 25 Thursday, March 15, 12

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.aaa .bbb .ccc { margin: 1px; } .xxx .yyy .zzz { @extend .ccc; } .aaa .bbb .ccc, .aaa .bbb .xxx .yyy .zzz, .xxx .yyy .aaa .bbb .zzz { margin: 1px; } DANGERS • Pay attention to CSS output; because, • Selector length can grow wildly out of control • This is less of an issue than it was SCSS CSS Note: a fix was pushed shortly after this presentation to reduce the number of selectors created by @extend: https://github.com/nex3/sass/commit/8f4869e608e70d7f468bb463ebfe7a939d834e27 26 Thursday, March 15, 12

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ORGANIZATION 27 Thursday, March 15, 12

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/* Reset CSS */ *{padding:0;margin:0} /* Global Styles */ h1{} p{} /* Layout Styles */ .wrapper{} .sidebar{} /* Page-Specific Styles */ .home-page h1{} .about-page h1{} .contact-page h1{} screen.css CSS 28 Thursday, March 15, 12

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/* Reset CSS */ *{padding:0;margin:0} /* Global Styles */ h1{} p{} /* Layout Styles */ .wrapper{} .sidebar{} /* Page-Specific Styles */ .home-page h1{} .about-page h1{} .contact-page h1{} screen.css CSS CSS Comments 28 Thursday, March 15, 12

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/* Reset CSS */ @import "reset.css"; /* Global Styles */ @import "global.css"; /* Layout Styles */ @import "layout.css"; /* Page-Specific Styles */ @import "pages/home.css"; @import "pages/about.css"; @import "pages/contact.css"; screen.css CSS 29 Thursday, March 15, 12

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/* Reset CSS */ @import "reset.css"; /* Global Styles */ @import "global.css"; /* Layout Styles */ @import "layout.css"; /* Page-Specific Styles */ @import "pages/home.css"; @import "pages/about.css"; @import "pages/contact.css"; screen.css CSS danger excessive http requests 29 Thursday, March 15, 12

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html about.html 30 Thursday, March 15, 12

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html about.html danger excessive http requests 30 Thursday, March 15, 12

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/* Reset CSS */ *{padding:0;margin:0} /* Global Styles */ h1{} p{} /* Layout Styles */ .wrapper{} .sidebar{} /* Page-Specific Styles */ .home-page h1{} .about-page h1{} .contact-page h1{} screen.css CSS 31 Thursday, March 15, 12

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// Reset CSS * padding: 0 margin: 0 // Global Styles h1 /* styles here */ p /* styles here */ // Layout Styles .wrapper /* styles here */ .sidebar /* styles here */ // Page-Specific Styles .home-page h1 color: red screen.sass Sass 32 Thursday, March 15, 12

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// Reset CSS @import reset // Global Styles h1 /* styles here */ p /* styles here */ // Layout Styles .wrapper /* styles here */ .sidebar /* styles here */ // Page-Specific Styles .home-page h1 color: red .about-page h1 color: white screen.sass Sass // Reset CSS * padding: 0 margin: 0 _reset.sass 33 Thursday, March 15, 12

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// Reset CSS @import reset // Global Styles @import global // Layout Styles .wrapper /* styles here */ .sidebar /* styles here */ // Page-Specific Styles .home-page h1 color: red .about-page h1 color: white .contact-page h1 color: blue screen.sass Sass // Global Styles h1 /* styles here */ p /* styles here */ _global.sass 34 Thursday, March 15, 12

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// Reset CSS @import reset // Global Styles @import global // Layout Styles @import layout // Page-Specific Styles .home-page h1 color: red .about-page h1 color: white .contact-page h1 color: blue screen.sass Sass // Layout Styles .wrapper /* styles here */ .sidebar /* styles here */ _layout.sass 35 Thursday, March 15, 12

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// Reset CSS @import reset // Global Styles @import global // Layout Styles @import layout // Page-Specific Styles .home-page @import home .about-page @import about-page .contact-page @import contact-page screen.sass Sass 36 Thursday, March 15, 12

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// Page-Specific Styles .home-page @import home screen.sass Sass 37 Thursday, March 15, 12

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// Page-Specific Styles .home-page @import home screen.sass Sass // home page styles h1 color: red p color: blue _home.sass 37 Thursday, March 15, 12

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// Page-Specific Styles .home-page @import home screen.sass Sass screen.css .home-page h1 { color: red; } .home-page p { color: blue; } // home page styles h1 color: red p color: blue _home.sass CSS 37 Thursday, March 15, 12

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// Page-Specific Styles .home-page @import home screen.sass Sass screen.css .home-page h1 { color: red; } .home-page p { color: blue; } // home page styles h1 color: red p color: blue _home.sass CSS css/ screen.css sass/ _home.sass screen.sass 37 Thursday, March 15, 12

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PARTIALS • Faster Sass compilation • Shareable components • Explicit definition of purpose • DRY css/ screen.css sass/ _global.sass _layout.sass _reset.sass screen.sass 38 Thursday, March 15, 12

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// Public Styles // All styles included in the following partials should have low specificity // such that page-specific stylesheets can extend (or override) these styles // Libraries @import compass @import public/config @import public/reset @import shared/avantgarde @import public/mixins @import public/sprites @import shared/payment_types // Typography @import public/type_styles @import public/type_layout @import public/links @import public/pagination PARTIAL STRATEGY Sass // Layout @import public/layout @import public/lightbox @import public/images // Forms @import public/form_styles @import public/form_layout @import public/messaging 39 Thursday, March 15, 12

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// Public Styles // All styles included in the following partials should have low specificity // such that page-specific stylesheets can extend (or override) these styles // Libraries @import compass @import public/config @import public/reset @import shared/avantgarde @import public/mixins @import public/sprites @import shared/payment_types // Typography @import public/type_styles @import public/type_layout @import public/links @import public/pagination PARTIAL STRATEGY Sass // Layout @import public/layout @import public/lightbox @import public/images // Forms @import public/form_styles @import public/form_layout @import public/messaging 39 Thursday, March 15, 12

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// Public Styles // All styles included in the following partials should have low specificity // such that page-specific stylesheets can extend (or override) these styles // Libraries @import compass @import public/config @import public/reset @import shared/avantgarde @import public/mixins @import public/sprites @import shared/payment_types // Typography @import public/type_styles @import public/type_layout @import public/links @import public/pagination PARTIAL STRATEGY Sass // Layout @import public/layout @import public/lightbox @import public/images // Forms @import public/form_styles @import public/form_layout @import public/messaging 39 Thursday, March 15, 12

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// Public Styles // All styles included in the following partials should have low specificity // such that page-specific stylesheets can extend (or override) these styles // Libraries @import compass @import public/config @import public/reset @import shared/avantgarde @import public/mixins @import public/sprites @import shared/payment_types // Typography @import public/type_styles @import public/type_layout @import public/links @import public/pagination PARTIAL STRATEGY Sass // Layout @import public/layout @import public/lightbox @import public/images // Forms @import public/form_styles @import public/form_layout @import public/messaging 39 Thursday, March 15, 12

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// Public Styles // All styles included in the following partials should have low specificity // such that page-specific stylesheets can extend (or override) these styles // Libraries @import compass @import public/config @import public/reset @import shared/avantgarde @import public/mixins @import public/sprites @import shared/payment_types // Typography @import public/type_styles @import public/type_layout @import public/links @import public/pagination PARTIAL STRATEGY Sass // Layout @import public/layout @import public/lightbox @import public/images // Forms @import public/form_styles @import public/form_layout @import public/messaging 39 Thursday, March 15, 12

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// Public Styles // All styles included in the following partials should have low specificity // such that page-specific stylesheets can extend (or override) these styles // Libraries @import compass @import public/config @import public/reset @import shared/avantgarde @import public/mixins @import public/sprites @import shared/payment_types // Typography @import public/type_styles @import public/type_layout @import public/links @import public/pagination PARTIAL STRATEGY Sass // Layout @import public/layout @import public/lightbox @import public/images // Forms @import public/form_styles @import public/form_layout @import public/messaging 39 Thursday, March 15, 12

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// Public Styles // All styles included in the following partials should have low specificity // such that page-specific stylesheets can extend (or override) these styles // Libraries @import compass @import public/config @import public/reset @import shared/avantgarde @import public/mixins @import public/sprites @import shared/payment_types // Typography @import public/type_styles @import public/type_layout @import public/links @import public/pagination PARTIAL STRATEGY Sass // Layout @import public/layout @import public/lightbox @import public/images // Forms @import public/form_styles @import public/form_layout @import public/messaging 39 Thursday, March 15, 12

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// Public Styles // All styles included in the following partials should have low specificity // such that page-specific stylesheets can extend (or override) these styles // Libraries @import compass @import public/config @import public/reset @import shared/avantgarde @import public/mixins @import public/sprites @import shared/payment_types // Typography @import public/type_styles @import public/type_layout @import public/links @import public/pagination PARTIAL STRATEGY Sass // Layout @import public/layout @import public/lightbox @import public/images // Forms @import public/form_styles @import public/form_layout @import public/messaging 39 Thursday, March 15, 12

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// Public Styles // All styles included in the following partials should have low specificity // such that page-specific stylesheets can extend (or override) these styles // Libraries @import compass @import public/config @import public/reset @import shared/avantgarde @import public/mixins @import public/sprites @import shared/payment_types // Typography @import public/type_styles @import public/type_layout @import public/links @import public/pagination PARTIAL STRATEGY Sass // Layout @import public/layout @import public/lightbox @import public/images // Forms @import public/form_styles @import public/form_layout @import public/messaging 39 Thursday, March 15, 12

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// Public Styles // All styles included in the following partials should have low specificity // such that page-specific stylesheets can extend (or override) these styles // Libraries @import compass @import public/config @import public/reset @import shared/avantgarde @import public/mixins @import public/sprites @import shared/payment_types // Typography @import public/type_styles @import public/type_layout @import public/links @import public/pagination PARTIAL STRATEGY Sass // Layout @import public/layout @import public/lightbox @import public/images // Forms @import public/form_styles @import public/form_layout @import public/messaging 39 Thursday, March 15, 12

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// Public Styles // All styles included in the following partials should have low specificity // such that page-specific stylesheets can extend (or override) these styles // Libraries @import compass @import public/config @import public/reset @import shared/avantgarde @import public/mixins @import public/sprites @import shared/payment_types // Typography @import public/type_styles @import public/type_layout @import public/links @import public/pagination PARTIAL STRATEGY Sass // Layout @import public/layout @import public/lightbox @import public/images // Forms @import public/form_styles @import public/form_layout @import public/messaging 39 Thursday, March 15, 12

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// Public Styles // All styles included in the following partials should have low specificity // such that page-specific stylesheets can extend (or override) these styles // Libraries @import compass @import public/config @import public/reset @import shared/avantgarde @import public/mixins @import public/sprites @import shared/payment_types // Typography @import public/type_styles @import public/type_layout @import public/links @import public/pagination PARTIAL STRATEGY Sass // Layout @import public/layout @import public/lightbox @import public/images // Forms @import public/form_styles @import public/form_layout @import public/messaging 39 Thursday, March 15, 12

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// Public Styles // All styles included in the following partials should have low specificity // such that page-specific stylesheets can extend (or override) these styles // Libraries @import compass @import public/config @import public/reset @import shared/avantgarde @import public/mixins @import public/sprites @import shared/payment_types // Typography @import public/type_styles @import public/type_layout @import public/links @import public/pagination PARTIAL STRATEGY Sass // Layout @import public/layout @import public/lightbox @import public/images // Forms @import public/form_styles @import public/form_layout @import public/messaging 39 Thursday, March 15, 12

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// Public Styles // All styles included in the following partials should have low specificity // such that page-specific stylesheets can extend (or override) these styles // Libraries @import compass @import public/config @import public/reset @import shared/avantgarde @import public/mixins @import public/sprites @import shared/payment_types // Typography @import public/type_styles @import public/type_layout @import public/links @import public/pagination PARTIAL STRATEGY Sass // Layout @import public/layout @import public/lightbox @import public/images // Forms @import public/form_styles @import public/form_layout @import public/messaging 39 Thursday, March 15, 12

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// Public Styles // All styles included in the following partials should have low specificity // such that page-specific stylesheets can extend (or override) these styles // Libraries @import compass @import public/config @import public/reset @import shared/avantgarde @import public/mixins @import public/sprites @import shared/payment_types // Typography @import public/type_styles @import public/type_layout @import public/links @import public/pagination PARTIAL STRATEGY Sass // Layout @import public/layout @import public/lightbox @import public/images // Forms @import public/form_styles @import public/form_layout @import public/messaging 39 Thursday, March 15, 12

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// Public Styles // All styles included in the following partials should have low specificity // such that page-specific stylesheets can extend (or override) these styles // Libraries @import compass @import public/config @import public/reset @import shared/avantgarde @import public/mixins @import public/sprites @import shared/payment_types // Typography @import public/type_styles @import public/type_layout @import public/links @import public/pagination PARTIAL STRATEGY Sass // Layout @import public/layout @import public/lightbox @import public/images // Forms @import public/form_styles @import public/form_layout @import public/messaging 39 Thursday, March 15, 12

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// Public Styles // All styles included in the following partials should have low specificity // such that page-specific stylesheets can extend (or override) these styles // Libraries @import compass @import public/config @import public/reset @import shared/avantgarde @import public/mixins @import public/sprites @import shared/payment_types // Typography @import public/type_styles @import public/type_layout @import public/links @import public/pagination PARTIAL STRATEGY Sass // Layout @import public/layout @import public/lightbox @import public/images // Forms @import public/form_styles @import public/form_layout @import public/messaging 39 Thursday, March 15, 12

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// Public Styles // All styles included in the following partials should have low specificity // such that page-specific stylesheets can extend (or override) these styles // Libraries @import compass @import public/config @import public/reset @import shared/avantgarde @import public/mixins @import public/sprites @import shared/payment_types // Typography @import public/type_styles @import public/type_layout @import public/links @import public/pagination PARTIAL STRATEGY Sass // Layout @import public/layout @import public/lightbox @import public/images // Forms @import public/form_styles @import public/form_layout @import public/messaging 39 Thursday, March 15, 12

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// Public Styles // All styles included in the following partials should have low specificity // such that page-specific stylesheets can extend (or override) these styles // Libraries @import compass @import public/config @import public/reset @import shared/avantgarde @import public/mixins @import public/sprites @import shared/payment_types // Typography @import public/type_styles @import public/type_layout @import public/links @import public/pagination PARTIAL STRATEGY Sass // Layout @import public/layout @import public/lightbox @import public/images // Forms @import public/form_styles @import public/form_layout @import public/messaging 39 Thursday, March 15, 12

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CONTROL LOGIC Loops, etc. 40 Thursday, March 15, 12

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.pseudo-meter { display: block; height: 20px; text-indent: -9999px; background-color: gray; @for $i from 0 through 10 { &.value-#{$i} { width: $i * 10%; @if $i > 7 { background-color: red; } } } } .pseudo-meter.value-0 { width: 0%; } .pseudo-meter.value-1 { width: 20%; } .pseudo-meter.value-2 { width: 40%; } .pseudo-meter.value-3 { width: 60%; } .pseudo-meter.value-4 { width: 80%; } .pseudo-meter.value-5 { width: 100%; } • Simple “meter-like” element • Change color above certain threshold SCSS CSS html 41 Thursday, March 15, 12

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@mixin pseudo-meter($height, $limit: 7) { display: block; height: $height; text-indent: -9999px; background-color: gray; @for $i from 0 through 10 { &.value-#{$i} { width: $i * 10%; @if $i > $limit { background-color: red; } } } } .pseudo-meter (@height, @limit: 7) { display: block; height: @height; text-indent: -9999px; background-color: gray; .bg (@i) when (@i > @limit) { background-color: red; } .bg (@i) {} .loop (@i) when (@i > 0) { (~”.value-@{i}”) { width: @i * 10%; .bg(@i); } .loop(@i - 1); } .loop (0) {} .loop(10); } LESS SCSS 42 Thursday, March 15, 12

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ADVANCED LANGUAGE FEATURES 43 Thursday, March 15, 12

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.mixin (@a) when (lightness(@a) > 50%) { background-color: black; } .mixin (@a) when (lightness(@a) < 50%) { background-color: white; } GUARDS • expression matching • declarative • looks like @media LESS 44 Thursday, March 15, 12

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.mixin (@a) when (isnumber(@a)) { /* some stuff */ } .mixin (@a) when (iscolor(@a)) { /* some stuff */ } .mixin (@a) when (isurl(@a)) { /* some stuff */ } .mixin (@a) when (ispercentage(@a)) { /* some stuff */ } TYPE CHECKING • unit types • px, %, em • entitity types • color, #, str, etc… LESS 45 Thursday, March 15, 12

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.mixin (12) { background-color: black; } .mixin (@fat) { background-color: black; } .mixin (...) { background-color: black; } PATTERN MATCHING • conditional execution • based on arguments • varargs (v1.3+) NEW! LESS 46 Thursday, March 15, 12

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LIBRARIES Compass, Fancy Buttons, Formalize, etc 47 Thursday, March 15, 12

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48 Thursday, March 15, 12

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NEW! Compass v0.12 Released March 12th (yesterday) 48 Thursday, March 15, 12

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li.error { background-color: #fdd; border-top-color: #fff; @include background-image(linear-gradient( left, #fff9f9, #ffeeee 20%, #ffeeee 80%, #fff9f9 )); } li.error { background-color: #ffdddd; border-top-color: white; background-image: -webkit-gradient( linear, 0% 50%, 100% 50%, color-stop(0%, #fff9f9), color-stop(20%, #ffeeee), color-stop(80%, #ffeeee), color-stop(100%, #fff9f9) ); background-image: -moz-linear-gradient( left, #fff9f9, #ffeeee 20%, #ffeeee 80%, #fff9f9 ); background-image: linear-gradient( left, #fff9f9, #ffeeee 20%, #ffeeee 80%, #fff9f9 ); } CSS3 • Use CSS3 now! • Single, common syntax • Let the Compass team worry about browser support SCSS CSS 49 Thursday, March 15, 12

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@import "compass/css3" @import "compass/css3/border-radius"; @import "compass/css3/inline-block"; @import "compass/css3/opacity"; @import "compass/css3/box-shadow"; @import "compass/css3/text-shadow"; @import "compass/css3/columns"; @import "compass/css3/box-sizing"; @import "compass/css3/box"; @import "compass/css3/gradient"; @import "compass/css3/images"; @import "compass/css3/background-clip"; @import "compass/css3/background-origin"; @import "compass/css3/background-size"; @import "compass/css3/font-face"; @import "compass/css3/transform"; @import "compass/css3/transition"; @import "compass/css3/appearance"; JUST DO THIS SCSS 50 Thursday, March 15, 12

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nav { background: image-url("nav_bg.png"); } .logo { background: inline-image("logo.png"); } nav { background: url(/images/nav_bg.png); } .logo { background: url( data:image/png;base64,iVBORw0KGgo...); } nav { background: url( http://cdn.example.com/images/nav_bg.png); } .logo { background: url( data:image/png;base64,iVBORw0KGgo...); } URL HELPERS • Relative paths for assets in development, absolute for production CDNs • Inline images and fonts Dev PRO SCSS CSS 51 Thursday, March 15, 12

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#{headings()} { line-height: 1.25em; } #{headings(2,6)} { font-weight: normal; } #{elements-of-type(block)} { margin: 10px 0; } h1,h2,h3,h4,h5,h6 { line-height: 1.25em; } h2,h3,h4,h5,h6 { font-weight: normal; } address, article, aside, blockquote, center, dd, details, dir, div, dl, dt, fieldset, figcaption, figure, footer, form, frameset, h1, h2, h3, h4, h5, h6, header, hgroup, hr, isindex, menu, nav, noframes, noscript, ol, p, pre, section, summary, ul { margin: 10px 0; } UTILITY HELPERS • Headings: all or range • Elements of type: inline, block, html5-inline, html5-block, more SCSS CSS 52 Thursday, March 15, 12

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rgba($color, $alpha) Adds an alpha layer to any color value. mix($color-1, $color-2, [$weight]) Mixes two colors together. hsla($color, $alpha) Adds an alpha layer to any color value. lighten($color, $amount) Makes a color lighter. darken($color, $amount) Makes a color darker. saturate($color, $amount) Makes a color more saturated. desaturate($color, $amount) Makes a color less saturated. grayscale($color) Converts a color to grayscale. complement($color) Returns the complement of a color. invert($color) Returns the inverse of a color. COLOR FUNCTIONS • Add alpha to hex • Work in HSL, support IE • Find safe colors automagically 53 Thursday, March 15, 12

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@import "compass/typography/vertical_rhythm"; $base-font-size: 16px; $base-line-height: 24px; @include establish-baseline; body { font-family: 'Helvetica Neue', sans-serif; @include debug-vertical-alignment( "../images/debug.png"); } h1 {@include adjust-font-size-to(48px)} h2 {@include adjust-font-size-to(36px)} h3 {@include adjust-font-size-to(24px)} h4 {@include adjust-font-size-to(20px)} h5 {@include adjust-font-size-to(18px)} p {@include leader; @include trailer;} h2.important {@include leader(2); @include trailer(2)} TYPOGRAPHY • Vertical rhythm • Add padding, margin in rhythm units SCSS 54 Thursday, March 15, 12

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@mixin border-radius ($radii) { -webkit-border-radius: $radii; -moz-border-radius: $radii; border-radius: $radii; } @function golden-ratio(($value, $increment) { @return modular-scale($value, $increment, 1.618) } div { font-size: modular-scale(14px, 1, 1.618); } div { font-size: 22.652px; } MORE VANILLA CSS3 • No syntax abstraction • Use shorthands • A few added functions • Simply patterns, no packaging SCSS CSS 56 Thursday, March 15, 12

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SPRITES 57 Thursday, March 15, 12

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SPRITES 58 Thursday, March 15, 12

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SPRITES 58 Thursday, March 15, 12

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SPRITES • Fewer images = fewer http requests 58 Thursday, March 15, 12

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SPRITES • Fewer images = fewer http requests • How many? 58 Thursday, March 15, 12

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SPRITES • Fewer images = fewer http requests • How many? • HTML element? 58 Thursday, March 15, 12

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SPRITES • Fewer images = fewer http requests • How many? • HTML element?
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SPRITES • Fewer images = fewer http requests • How many? • HTML element?
or // is a sprite container i display: block HTML Sass 58 Thursday, March 15, 12

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HTML SPRITES 59 Thursday, March 15, 12

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HTML SPRITES american-express.png discover.png mastercard.png visa.png card 59 Thursday, March 15, 12

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$card-sprite-dimensions: true @import "card/*.png" +all-card-sprites HTML SASS SPRITES american-express.png discover.png mastercard.png visa.png card 59 Thursday, March 15, 12

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$card-sprite-dimensions: true @import "card/*.png" +all-card-sprites HTML card-s1234567890.png SASS SPRITES american-express.png discover.png mastercard.png visa.png card 59 Thursday, March 15, 12

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SPRITES HTML SASS $card-sprite-dimensions: true @import "card/*.png" +all-card-sprites 60 Thursday, March 15, 12

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CSS SPRITES .card-sprite, .card-american-express, .card- discover, .card-mastercard, .card-visa { background: url('../images/card-s3c04635c42.png') no-repeat; } .card-american-express { background-position: 0 -22px; height: 22px; width: 32px; } .card-discover { background-position: 0 -66px; height: 22px; width: 32px; } .card-mastercard { background-position: 0 0; height: 22px; width: 32px; } .card-visa { background-position: 0 -44px; height: 22px; width: 32px; } HTML SASS $card-sprite-dimensions: true @import "card/*.png" +all-card-sprites 60 Thursday, March 15, 12

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CSS SPRITES .card-sprite, .card-american-express, .card- discover, .card-mastercard, .card-visa { background: url('../images/card-s3c04635c42.png') no-repeat; } .card-american-express { background-position: 0 -22px; height: 22px; width: 32px; } .card-discover { background-position: 0 -66px; height: 22px; width: 32px; } .card-mastercard { background-position: 0 0; height: 22px; width: 32px; } .card-visa { background-position: 0 -44px; height: 22px; width: 32px; } danger Duplicated dimensions HTML SASS $card-sprite-dimensions: true @import "card/*.png" +all-card-sprites 60 Thursday, March 15, 12

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CSS SPRITES .card-sprite, .card-american-express, .card- discover, .card-mastercard, .card-visa { background: url('../images/card-s3c04635c42.png') no-repeat; } .card-american-express { background-position: 0 -22px; height: 22px; width: 32px; } .card-discover { background-position: 0 -66px; height: 22px; width: 32px; } .card-mastercard { background-position: 0 0; height: 22px; width: 32px; } .card-visa { background-position: 0 -44px; height: 22px; width: 32px; } danger Duplicated dimensions HTML SASS $card-sprite-dimensions: true @import "card/*.png" +all-card-sprites 60 Thursday, March 15, 12

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CSS SPRITES .card-sprite, .card-american-express, .card- discover, .card-mastercard, .card-visa { background: url('../images/card-s3c04635c42.png') no-repeat; } .card-american-express { background-position: 0 -22px; height: 22px; width: 32px; } .card-discover { background-position: 0 -66px; height: 22px; width: 32px; } .card-mastercard { background-position: 0 0; height: 22px; width: 32px; } .card-visa { background-position: 0 -44px; height: 22px; width: 32px; } HTML SASS $card-sprite-dimensions: true @import "card/*.png" +all-card-sprites 60 Thursday, March 15, 12

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CSS SPRITES .card-sprite, .card-american-express, .card- discover, .card-mastercard, .card-visa { background: url('../images/card-s3c04635c42.png') no-repeat; } .card-american-express { background-position: 0 -22px; height: 22px; width: 32px; } .card-discover { background-position: 0 -66px; height: 22px; width: 32px; } .card-mastercard { background-position: 0 0; height: 22px; width: 32px; } .card-visa { background-position: 0 -44px; height: 22px; width: 32px; } HTML SASS $card-sprite-dimensions: true @import "card/*.png" +all-card-sprites 61 Thursday, March 15, 12

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CSS SPRITES HTML SASS $card-sprite-dimensions: true @import "card/*.png" +all-card-sprites 61 Thursday, March 15, 12

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CSS SPRITES HTML SASS $card-sprite-dimensions: true @import "card/*.png" +all-card-sprites 61 Thursday, March 15, 12

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CSS SPRITES HTML SASS $card-visa-image: "card/visa.png" .card-sprite width: image-width($card-visa-image) height: image-height($card-visa-image) @import "card/*.png" +all-card-sprites 62 Thursday, March 15, 12

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CSS SPRITES HTML SASS $card-visa-image: "card/visa.png" .card-sprite width: image-width($card-visa-image) height: image-height($card-visa-image) @import "card/*.png" +all-card-sprites 62 Thursday, March 15, 12

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CSS SPRITES HTML SASS $card-visa-image: "card/visa.png" .card-sprite width: image-width($card-visa-image) height: image-height($card-visa-image) @import "card/*.png" +all-card-sprites 62 Thursday, March 15, 12

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CSS SPRITES HTML SASS $card-visa-image: "card/visa.png" .card-sprite width: image-width($card-visa-image) height: image-height($card-visa-image) @import "card/*.png" +all-card-sprites 63 Thursday, March 15, 12

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CSS SPRITES .card-sprite, .card-american-express, .card- discover, .card-mastercard, .card-visa { width: 32px; height: 22px; } .card-sprite, .card-american-express, .card- discover, .card-mastercard, .card-visa { background: url('../images/card- s3c04635c42.png') no-repeat; } .card-american-express { background-position: 0 -22px; } .card-discover { background-position: 0 -66px; } .card-mastercard { background-position: 0 0; } .card-visa { background-position: 0 -44px; } HTML SASS $card-visa-image: "card/visa.png" .card-sprite width: image-width($card-visa-image) height: image-height($card-visa-image) @import "card/*.png" +all-card-sprites 63 Thursday, March 15, 12

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CSS SPRITES .card-sprite, .card-american-express, .card- discover, .card-mastercard, .card-visa { width: 32px; height: 22px; } .card-sprite, .card-american-express, .card- discover, .card-mastercard, .card-visa { background: url('../images/card- s3c04635c42.png') no-repeat; } .card-american-express { background-position: 0 -22px; } .card-discover { background-position: 0 -66px; } .card-mastercard { background-position: 0 0; } .card-visa { background-position: 0 -44px; } HTML SASS $card-visa-image: "card/visa.png" .card-sprite width: image-width($card-visa-image) height: image-height($card-visa-image) @import "card/*.png" +all-card-sprites 63 Thursday, March 15, 12

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CSS SPRITES .card-sprite, .card-american-express, .card- discover, .card-mastercard, .card-visa { width: 32px; height: 22px; } .card-sprite, .card-american-express, .card- discover, .card-mastercard, .card-visa { background: url('../images/card- s3c04635c42.png') no-repeat; } .card-american-express { background-position: 0 -22px; } .card-discover { background-position: 0 -66px; } .card-mastercard { background-position: 0 0; } .card-visa { background-position: 0 -44px; } HTML SASS $card-visa-image: "card/visa.png" .card-sprite width: image-width($card-visa-image) height: image-height($card-visa-image) @import "card/*.png" +all-card-sprites 63 Thursday, March 15, 12

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HORIZONTALLY CENTERED @import "my-icons/*.png" 64 Thursday, March 15, 12

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HORIZONTALLY CENTERED @import "my-icons/*.png" 64 Thursday, March 15, 12

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HORIZONTALLY CENTERED $my-icons-position: 50.0% @import "my-icons/*.png" 64 Thursday, March 15, 12

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vertical 65 Thursday, March 15, 12

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NEW! Compass v0.12 vertical 65 Thursday, March 15, 12

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NEW! Compass v0.12 vertical horizontal 65 Thursday, March 15, 12

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NEW! Compass v0.12 vertical horizontal diagonal 65 Thursday, March 15, 12

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NEW! Compass v0.12 vertical horizontal diagonal smart 65 Thursday, March 15, 12

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NEW! Compass v0.12 vertical horizontal diagonal smart 65 Thursday, March 15, 12

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lesscss.org sass-lang.com compass-style.org 66 Thursday, March 15, 12

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fin @beau @pengwynn @xeeton @fat 67 Thursday, March 15, 12