Your CSS is a Mess from ShropGeek's Revolution Conf

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YOUR CSS IS A MESS

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THE TAMING OF THE SHREWsbury

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CSS is easy.

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li { }

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oat: left padding: 3px 50px; margin: 0;

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.block { display:block !important; } .inline { display:inline !important; } .hide { display:none !important; } .s-none { margin:0 !important; } .s { margin:10px !important; } .ss { margin:20px !important; } .sr { margin-right:10px !important; } .p-none { padding:0 !important; } .p { padding:10px !important; } .pp { padding:20px !important; } .pt { padding-top:10px !important; } .w-auto { width:auto !important; }

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1 person.

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4 designers.

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5 developers.

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1 team.

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30 designers.

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5 prototypers.

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200 engineers.

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multiple teams.

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multiple projects.

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.layout_1_2 #blogList .pageitem .statusBar {} .layout_1_2 #blogList .pageitem .statusBar .status, #blogList .pageitem .statusBar .status .status1 { } .layout_1_2 #blogList .pageitem .statusBar .status { } .layout_1_2 #blogList .pageitem .statusBar .status .status1 { } .layout_1_2 #blogList .pageitem .statusBar .status .status1 a { } .layout_1_2 #blogList .pageitem .statusBar .status .status1 .sep {}

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#nav-header ul li { float: left; ... } #nav-content ul li { float: left; ... }

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#comments .comment .meta .authorname {} #comments .comment .meta .commentnumber a {}

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#comments .comment .meta .authorname {} #comments .comment .meta .commentnumber a {}

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Scalable and Modular Architecture for CSS

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SMACSS

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2 Considerations

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2 Categorization Naming Convention

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1 Categorization

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Five Categories Base Layout Module State Theme

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Base

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html { background-color: #FFF; font-family: Arial, Helvetica, sans-serif; font-size: 14px; } body { margin: 0; padding: 0; } h1, h2, h3 { margin: 1em 0; }

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Layout

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Sidebar Content Header

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Module

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Customized List Button Tabs

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Module Variations

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Large Search Dark Small

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Module components

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State

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Active State Default State Disabled State Default State

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Theme

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Have your CSS (and HTML)... Do one thing and one thing only

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http://snk.ms/1r The Single Responsibility Theory

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...

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.grid {} .col { float:left; } .col:nth-child(2n) { clear:left; } .module { display:inline-block; }

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...

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.grid {} .grid > li { float:left; } .grid > li:nth-child(2n) { clear:left; } .module { display:inline-block; }

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{{item}}

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...

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Categorization is about Isolation

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.nav { margin: 0; padding: 0; list-style: none; } .nav li { float: left; } .nav li a { display: block; padding: 5px 10px; background-color: blue; }

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Home
Products
Contact Us

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Home
Products
- Shoes
- Jackets
Contact Us

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.nav ul { margin: 0; padding:0; list-style:none; } .nav li li { float: none; } .nav li li a { padding: 2px; background-color: red; }

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.nav { margin: 0; padding: 0; list-style: none; } .nav > li { float: left; } .nav > li > a { display: block; padding: 5px 10px; background-color: blue; }

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.menu { margin: 0; padding: 0; list-style: none } .menu > li > a { display: block; padding: 2px; background-color: red; }

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2 Naming Convention

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Naming Convention Naming convention clari es intent

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Use Class over ID Don’t use a grenade to dig a hole when a shovel will do.

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Speciﬁcity Inline ID Class (pseudo-classes and attribute selectors) Element (pseudo- elements) style="..." #article .article :hover [attr=val] a : rst-child

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Speciﬁcity Inline ID Class (pseudo-classes and attribute selectors) Element (pseudo- elements) style="..." #article .article :hover [attr=val] a : rst-child

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a { color: #039; } .subdued { color: #666; } #cancel { color: #900; } Link Link Link Link

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a { color: #039; } .subdued { color: #666 !important; } #cancel { color: #900; } Link Link Link Link

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Specificity Buster! !important

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Specificity Buster! !important

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a { color: #039; } .subdued, #cancel.subdued { color: #666; } #cancel { color: #900; } Link Link Link Link

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a { color: #039; } .subdued { color: #666; } .cancel { color: #900; } Link Link Link Link

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.btn {} .btn-large {} .btn-small {} .btn-default {} .btn-search {} .modal {} .modal-large .modal-header {} .modal-body {} .modal-footer {}

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.btn.large?

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.btn.large .field.large .modal.large

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class=”btn large” class=”large btn” class=”btn default large”

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http://snk.ms/20

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.btn { padding:5px 10px; font-size: 1em; .large { padding: 10px 20px; font-size: 2em; } }

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... padding:5px 10px; font-size: 1em; .large { padding: 10px 20px; font-size: 2em; } ...

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.btn-large

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.btn { padding:5px 10px; font-size: 1em; } .btn-large { padding: 10px 20px; font-size: 2em; }

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.btn {} .is-btn-active {} .is-btn-disabled {}

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.modulename .modulename-submodule .modulename-subcomponent No hyphens Always a root node No hyphens No difference from submodule

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.module-name .module-name--submodule .module-name__subcomponent allows for hyphens Always a root node Alternatives underscores hyphens

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.ModuleName .ModuleName-subModule .ModuleName--subComponent camelCase Alternatives double hyphen single hyphen

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Naming Convention • Pick a system that works for you and your team • Be consistent • Consider: • Root node • Sub-modules • Sub-components

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What does it mean?

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Shift your thinking

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Don’t code CSS for the page. Code it for the system.

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http://snk.ms/1x Atomic Design

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http://snk.ms/1y Responsive Deliverables

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State-based Design

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State-based Design • A layout or module style • Sub-modules • JavaScript-driven states • Pseudo-class states • Media query states

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CSS Panic http://snk.ms/15

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.enemys { z-index:3; position:absolute; top:0px; left:0; width:49px; height:93px; display:block; -webkit-appearance: button; -moz-appearance: button; background-position:0px 0px; background-repeat:no-repeat; -webkit-animation-iteration-count:infinite cursor:pointer; opacity:0.9; border:none;

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.enemys:checked{ overflow:hidden; -webkit-animation-name: none; -webkit-pointer-events: none; pointer-events: none; opacity:0; }

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.enemys:checked{ overflow:hidden; -webkit-animation-name: none; -webkit-pointer-events: none; pointer-events: none; opacity:0; }