Sassive Aggressive: Using Sass to Make Your Life Easier (NSWG Version)

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It's time to get sassy! By populer demand, this month's meetup features a talk by web developers Adam Darowski and Joel Oliviera on Sass (Syntactically Awesome Stylesheets). Learn how to make syling fun again with this simpler, more elegant syntax for CSS. Adam & Joel will explain the ins and outs of SASS by going through some step-by-step examples of how you can put it to use in your own workflow.

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Sassive Aggressive: Using Sass to Make Your Life Easier (NSWG Version)

  1. 1. Sassive AggressiveUsing Sass to make your life easier
  2. 2. Who?Joel Oliveira Adam Darowski Developer, The47th Web Developer, PatientsLikeMe
  3. 3. What is Sass?
  4. 4. What is Sass?sass-lang.com
  5. 5. What is Sass?• CSS on steroids• Adds Variables, Mixins, Nesting, Inheritance, and more…• It’s a meta-language that compiles to plain old CSS• Two “flavors” - Sass & SCSS
  6. 6. <rant>
  7. 7. Sass came firstbody  background-color: #fff color: #000 font: 16px/1.6 Georgia margin: 0
  8. 8. SCSS came nextbody {  background-color: #fff; color: #000; font: 16px/1.6 Georgia; margin: 0;}
  9. 9. body#home.home { .content { #learn-more { #faq { margin-top: 20px; aside { width: 300px; padding: 0 40px; h4 span { @include sans-serif-font(20px); } ul { color: #666; font-size: 12px; line-height: 1.5; list-style: square; padding-left: 1.2em; li { margin-bottom: 8px; { li:before { color: red; } } } ol { @include sans-serif-font(24px, $heading-color); list-style: decimal; max-width: 480px; p { font-size: 16px; margin: 1em 0; } } } } }}
  10. 10. ol { @include sans-serif-font(24px, $hea list-style: decimal; max-width: 480px; p { font-size: 16px; margin: 1em 0; } } } } }}
  11. 11. body#home.home { .content { #learn-more { #faq { margin-top: 20px; aside { width: 300px; padding: 0 40px; h4 span { @include sans-serif-font(20px); } ul { color: #666; font-size: 12px; line-height: 1.5; list-style: square; padding-left: 1.2em; li { margin-bottom: 8px; { li:before { color: red; } } } ol { @include sans-serif-font(24px, $heading-color); list-style: decimal; max-width: 480px; p { font-size: 16px; margin: 1em 0; } } } } }}
  12. 12. body#home.home { body#home.home .content { .content #learn-more { #learn-more #faq { #faq margin-top: 20px; margin-top: 20px aside { aside width: 300px; width: 300px padding: 0 40px; padding: 0 40px h4 span { h4 span @include sans-serif-font(20px); @include sans-serif-font(20px) } ul ul { color: #666 color: #666; font-size: 12px font-size: 12px; line-height: 1.5 line-height: 1.5; list-style: square list-style: square; padding-left: 1.2em padding-left: 1.2em; li li { margin-bottom: 8px margin-bottom: 8px; li:before { color: red li:before { ol color: red; @include sans-serif-font(24px, $heading-color) } list-style: decimal } max-width: 480px } p ol { font-size: 16px @include sans-serif-font(24px, $heading-color); margin: 1em 0 list-style: decimal; max-width: 480px; p { font-size: 16px; margin: 1em 0; } } } } Sass > SCSS }}
  13. 13. </rant>
  14. 14. Let’s talk about:1. Nesting2. Mix-ins3. Organization and Refactoring4. Math5. Wrapping Up
  15. 15. Nesting
  16. 16. Mix-ins
  17. 17. .foo {  -moz-border-radius: 10px;  -webkit-border-radius: 10px;  border-radius: 10px;}
  18. 18.   -moz-border-radius: 10px;  -webkit-border-radius: 10px;  border-radius: 10px;}.bar {  property: value;  -moz-border-radius: 10px;  -webkit-border-radius: 10px;  border-radius: 10px;}.dude {  property: value;  property: value;  -moz-border-radius: 10px;  -webkit-border-radius: 10px;  border-radius: 10px;}.guy {  property: value;  -moz-border-radius: 10px;
  19. 19. When using Sass….foo  +border_radius(10px)Will render as:.foo {  -moz-border-radius: 10px;  -webkit-border-radius: 10px;  border-radius: 10px;}
  20. 20. The mixin:@mixin border_radius($radius)  -moz-border-radius: $radius  -webkit-border-radius: $radius  border-radius: $radius
  21. 21. Another example:.foo  +box_shadow(0, 0, 5px, #AAA)Will render as:.foo {  -moz-box-shadow: 0 0 5px #AAA;  -webkit-box-shadow: 0 0 5px #AAA;  box-shadow: 0 0 5px #AAA;}
  22. 22. Or, pre-populate the mixin: @mixin box_shadow($h_offset: 0, $v_offset: 0, -->$blur_radius: 5px, $color: #AAA)   -moz-box-shadow: $h_offset $v_offset $blur_radius $color   -webkit-box-shadow: $h_offset $v_offset $blur_radius $color   box-shadow: $h_offset $v_offset $blur_radius $color--> Denotes “not a real line break”
  23. 23. Now, no argument is needed:.foo  +box_shadowWill render as:.foo {  -moz-box-shadow: 0 0 5px #AAA;  -webkit-box-shadow: 0 0 5px #AAA;  box-shadow: 0 0 5px #AAA;}
  24. 24. Or, you can override:.foo  +box_shadow(2, 2, 10, #CCC)Will render as:.foo {  -moz-box-shadow: 2px 2px 10px #CCC;  -webkit-box-shadow: 2px 2px 10px #CCC;  box-shadow: 2px 2px 10px #CCC;}
  25. 25. Gradients! .foo   +box_gradient(#FFFFFF, #000000) Will render as: .foo {   background-image: -moz-linear-gradient(top, #FFFFFF, -->#000000) background-image: -o-linear-gradient(top, #FFFFFF, -->#000000);   background-image: -webkit-gradient(linear,left top,left --> bottom,color-stop(0, #FFFFFF),color-stop(1, #000000))   background-image: -webkit-linear-gradient(#FFFFFF, -->#000000)   background-image: linear-gradient(top, #FFFFFF, #000000)   filter: progid:DXImageTransform.Microsoft.gradient -->(startColorStr=#FFFFFF, EndColorStr=#000000) }--> Denotes “not a real line break” http://css3please.com/
  26. 26. The mixin: @mixin box_gradient($start,$end)   background-image: -moz-linear-gradient(top, !start, !end) background-image: -o-linear-gradient(top, !start, !end);   background-image: -webkit-gradient(linear,left top,left --> bottom,color-stop(0, !start),color-stop(1, !end))   background-image: -webkit-linear-gradient(!start, !end)   background-image: linear-gradient(top, !start, !end)   filter: progid:DXImageTransform.Microsoft.gradient -->(startColorStr=!start, EndColorStr=!end)--> Denotes “not a real line break”
  27. 27. http://tech.patientslikeme.com/2010/09/10/deconstructing-my-favorite-sass-mixin/
  28. 28. .dropdown-inner {  -moz-border-radius: 0 3px 3px 3px;  -webkit-border-radius: 0 3px 3px 3px;  border-radius: 0 3px 3px 3px;  -moz-box-shadow: 1px 1px 4px #CCC;  -webkit-box-shadow: 1px 1px 4px #CCC;  box-shadow: 1px 1px 4px #CCC;  background-image: -moz-linear-gradient(top, #FFFFFF, -->#FCF5DE) background-image: -o-linear-gradient(top, #FFFFFF, -->#000000);  background-image: -webkit-gradient(linear,left top,left --> bottom,color-stop(0, #FFFFFF),color-stop(1, #FCF5DE))  background-image: -webkit-linear-gradient(#FFFFFF, -->#FCF5DE)  background-image: linear-gradient(top, #FFFFFF, #FCF5DE)  filter: progid:DXImageTransform.Microsoft.gradient -->(startColorStr=#FFFFFF, EndColorStr=#FCF5DE)}
  29. 29. .dropdown-inner {  +border_radius(0 3px 3px 3px  -moz-border-radius: 03px 3px) 3px;  +box_shadow(1, 1, 4, #CCC)  -webkit-border-radius: 0 3px 3px 3px;  border-radius: 0 3px 3px 3px; +box_gradient(#FFFFFF, #FCF5DE)  -moz-box-shadow: 1px 1px 4px #CCC;  -webkit-box-shadow: 1px 1px 4px #CCC;  box-shadow: 1px 1px 4px #CCC;  background-image: -moz-linear-gradient(top, #FFFFFF, -->#FCF5DE) background-image: -o-linear-gradient(top, #FFFFFF, -->#000000);  background-image: -webkit-gradient(linear,left top,left --> bottom,color-stop(0, #FFFFFF),color-stop(1, #FCF5DE))  background-image: -webkit-linear-gradient(#FFFFFF, -->#FCF5DE)  background-image: linear-gradient(top, #FFFFFF, #FCF5DE)  filter: progid:DXImageTransform.Microsoft.gradient -->(startColorStr=#FFFFFF, EndColorStr=#FCF5DE)}
  30. 30. More with mixins:• Re-usable interface elements (buttons, headers—with or without arguments).• Reset styles (data tables, lists, etc.).• References to frequently-accessed sprites.• Frequently used IE hacks.• Etc.
  31. 31. Organization & Refactoring
  32. 32. “.Class Soup”
  33. 33. Math
  34. 34. Color Manipulation:.faded  background-color: fade_out(#000, 0.4)Will render as:.faded {  background-color: rgba(0, 0, 0, 0.6);}
  35. 35. lighten & darken:.lighter  background-color: lighten(#000064, 30%)Will render as:.lighter {  background-color: #4B4BFF;}
  36. 36. complement.comp  background-color: complement(#000064)Will render as:.comp {  background-color: #646400;}
  37. 37. With a variable:$default_color: #000064.level1 background-color: $default_color.level2 background-color: lighten($default_color, 15%).level3 background-color: lighten($default_color, 30%).level4 background-color: lighten($default_color, 45%).level5 background-color: lighten($default_color, 60%)
  38. 38. With a variable:.level1 { background-color: #000064; }.level2 { background-color: #0000b1; }.level3 { background-color: #0000fd; }.level4 { background-color: #4b4bff; }.level5 { background-color: #9797ff; }
  39. 39. Simple math:$container_width: 1000px$photo_width: 480px.caption width: $container_width - $photo_widthWill render as:.caption { width: 520px;}
  40. 40. https://github.com/adarowski/The-Hall-of-wWAR
  41. 41. <ul id="timeline-in"> <li id="dwhite" class="3b level5">White</li> <li id="canson" class="1b hof level2">Anson</li> <li id="jorourke" class="hof lf level4">ORourke</li> <li id="pgalvin" class="p hof level2">Galvin</li> <li id="mward" class="hof ss level5">Ward</li> <li id="jmccormick" class="p level3">McCormick</li> <li id="kkelly" class="hof rf level5">Kelly</li> <li id="ggore" class="cf level5">Gore</li> <li id="jglasscock" class="ss level4">Glasscock</li> ... <li id="jbagwell" class="1b level2"></li></ul>
  42. 42. ul list-style: none padding: 40px 0 0 margin: 0li cursor: pointer margin: 0 0 5px padding: 0 display: block padding: 2px color: white position: relative
  43. 43. We needmargin-left and width.
  44. 44. The mixin:@mixin bar($start,$end) $start_value: $start - 1870 margin-left: ($start_value*8) + px $length: $end - $start width: ($length*8) - 4px
  45. 45. The mixin:@mixin bar($start,$end) $start_value: $start - 1870 Pass in margin-left: ($start_value*8) + px arguments for start and end $length: $end - $start year. width: ($length*8) - 4px
  46. 46. The mixin:@mixin bar($start,$end) $start_value is $start_value: $start - 1870 the difference margin-left: ($start_value*8) + px between the $length: $end - $start start year and width: ($length*8) - 4px 1870.
  47. 47. The mixin:@mixin bar($start,$end) $start_value: $start - 1870 Multiply $start_value by margin-left: ($start_value*8) + px 8 to get the left $length: $end - $start margin (8 pixels width: ($length*8) - 4px per year).
  48. 48. The mixin:@mixin bar($start,$end) $start_value: $start - 1870 Career $length will be used to margin-left: ($start_value*8) + px determine the $length: $end - $start width of the width: ($length*8) - 4px box.
  49. 49. The mixin:@mixin bar($start,$end) $start_value: $start - 1870 Again, multiply margin-left: ($start_value*8) + px by 8 to get the width, and also $length: $end - $start subtract 4 pixels width: ($length*8) - 4px (padding).
  50. 50. The magic:#jbagwell +bar(1991, 2005)@mixin bar(1991,2005) $start_value: 1991 - 1870 = 121 margin-left: (121*8) + px = 968px $length: 2005 - 1991 = 14 width: (14*8) - 4px) = 108px
  51. 51. The magic:#jbagwell +bar(1991, 2005)Will render as:#jbagwell { margin-left: 968px; width: 108px;}
  52. 52. margin-left: 16px; width: 164px; } #pgalvin {Repeat: margin-left: 40px; width: 132px; } #kkelly { margin-left: 64px; width: 116px; } #mward { margin-left: 64px; width: 124px; } #dbrouthers { margin-left: 72px; width: 196px; } #mwelch { margin-left: 80px; width: 92px; } #tkeefe { margin-left: 80px; width: 100px; } #rconnor { margin-left: 80px; width: 132px; } #bewing { margin-left: 80px; width: 132px; } #cradbourn { margin-left: 88px; width: 76px; } #jclarkson { margin-left: 96px; width: 92px; } #bmcphee { margin-left: 96px; width: 132px; } #tmccarthy { margin-left: 112px; width: 92px; }
  53. 53. https://github.com/adarowski/The-Hall-of-wWAR
  54. 54. Wrapping Up
  55. 55. Installation$ sudo gem install hamlc:> ruby gem install haml
  56. 56. Compiling?$ sass --watch ./sass/:./css/# all .sass files compiled into ./css$ sass --update sass/style.sass:css/style.css# ... style.sass => style.css
  57. 57. Compiling?... on the what? blech...
  58. 58. Compiling?... on the what? blech...
  59. 59. Compress / Minify~/sites/designsponge joel $ ls -hal style.css-rw-r--r-- 1 joel staff 32K Mar 18 11:26 style.css~/sites/designsponge joel $ cp style.css style.scss~/sites/designsponge joel $ sass -t compressed style.scssstyle_compressed.css~/sites/designsponge joel $ ls -hal *.*css-rw-r--r-- 1 joel staff 32K Mar 18 11:26 style.css-rw-r--r-- 1 joel staff 32K Mar 18 11:33 style.scss-rw-r--r-- 1 joel staff 26K Mar 18 11:34 style_compressed.css
  60. 60. Compress / Minify
  61. 61. Resources• sass-lang.com• beta.compass-style.org• @sasswatch• wynn.fm/okc - @pengwynn• rubyinstaller.org (windows)• github.com/adarowski• github.com/jayroh
  62. 62. Joel @jayrohAdam @adarowski
  63. 63. Questions?

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