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Sass: An Introduction
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Stuart Robson
January 08, 2014
Programming
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190
Sass: An Introduction
These are the slides I used in my workshop at The Founder Hub on the 8th of January 2014
Stuart Robson
January 08, 2014
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Transcript
Sass: An Introduction Founder’s Hub, Cardiff. January 2014
About Me. Stuart Robson ! front-end developer ! rwdcalc.com SassnotSASS.com
! Sassifaction
A small caveat I don’t know _everything_
What is Sass?
Syntactically Awesome Stylesheets A pre-processor making CSS fun again.! Hampton
Catlin created it in 2006 to work along side HAML! Nathan Weizenbaum began to assist and develop it late 2006! Chris Epstein committed the first version of Compass in Autumn 2008
Alternatives to Sass
The Tale of Two Syntaxes
Sass
SCSS
Installing Sass… PrePros
None
Your First Sass file
CSS and Sass commenting ‘CSS’ style comments are retained unless
:compressed Unless you write - /*! comment */
Sass > CSS compile options :nested :expanded :compact :compressed
@import In CSS In Sass
None
So, what can Sass do?
$variables what could we use it for?
The Facebook Blue Declared 261 times throughout all stylesheets! Imagine
if Zuck wanted to change the shade? #3B5998
None
Webfonts with easy fallbacks
None
Border Radius Margin Media Queries Border Padding
Nesting
Don’t follow DOM
3 levels deep When nesting your Sass, don’t go any
further than 3 levels deep helps performance (although negligible).! helps sanity when looking at your code.
Combining Selectors
The Powerful Ampersand
The Parent Selector using the &(ampersand) reference the parent selector
None
@mixins resusable code snippets! customisable but you can set default
$arguments
@mixins Make Sass write the menial bits of CSS for
you
@extend clones the attributes from a rule and adds them
to another rule! be careful, with great power comes great responsibility
@extends
Using @extend badly
%placeholders they can be @extend-ed just like existing classes or
IDs.! the @extend-ed %placeholder will be generated.! the actual %placeholder selector won’t be generated. or ‘silent classes’
%placeholders or ‘silent classes’
Functions Math Operators +, -, *, /, and %
Functions Number Functions
Functions Control Directives @if @for @each @while
Functions @for loop
Functions @each loop
Colour
@content allow you to pass anything into a mixin! I
mainly use it for media queries! could be added to the bottom of any mixin, just in case
@content
@content & media queries
@content, media queries and Internet Explorer
A CSS authoring framework
What’s in Compass CSS3 mixins! typographic rhythm! sprite generation! loads
of helpers
Lots of Sass mixins grids typographical ! stylesheet
Sass 3.3
Sass 3.3 Sourcemaps - so you can see what you’re
editing in devtools.! Improved & support! Maps support! @at-root rule