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JavaScript

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HTML 

              
                <body>
  <header>
  <nav><ul>
    <li><a href="#">Home</a></li>
    <li>Nesting demo</li>
    </ul>
  </nav>
  </header>
  <main>
    <h1>A <abbr title="Don't Repeat Yourself">DRY</abbr> method</h1>
    <p>Element including a <span class="small">mixin</span></p>    <button class="button-report">Report</button> 
    <button class="button-submit">Submit</button>
  </main>  
  <section>
    <div class="quote"></div>
    <ul>
      <li>First item</li>
      <li>Second item</li>
    </ul>
  </section>
  
</body>
!

CSS 

              
                // Define variables
$myFont: Helvetica, sans-serif;

body {
  font-family: $myFont;
}

// Use Nesting
nav {
  ul {
    margin: 0;
    padding: 0;
    list-style: none;
  }
  li {
    display: inline-block;
  }
  a {
    display: block;
    padding: 6px 12px;
    text-decoration: none;
  }
}

/* Use @mixin */
@mixin important-text {
  color: red;
  font-size: 25px;
  font-weight: bold;
  border: 1px solid blue;  
}

// Note: a @mixin can contain another @mixin as well as accept arguments (separator: comma) with defaults values
@mixin add-padding($padding: 1em) {
  @include important-text;
  padding: $padding;
}

p {
  @include add-padding(0.2em);
  background-color: beige;
}

// Use @extend
button {
  border: none;
  padding: 15px 30px;
  text-align: center;
  font-size: 16px;
  cursor: pointer;
}

.button-report  {
  @extend button;
  background-color: red;
}

.button-submit  {
  @extend button;
  background-color: green;
  color: white;
}

// Use functions
.quote {
  margin: 2em;  
}

// String function
.quote:before {
  content: to-lower-case("Hello World!")
}

// Numeric function
.quote {
  $nbPx: random(15);
  border: $nbPx+px solid orange;
  padding: $nbPx/2+em;
}

// List Function
h1 {
  $border: append((5px dashed), (lightblue), space);
  border: $border;
}

// Map function
$font-sizes: ("small": 12px, "normal": 18px, "large": 24px);
  
.small {
  font-size: map-get($font-sizes, "small");
} 

// Selector Function
#{selector-append("ul, li")} {
  color: grey;
  margin: 1em;
};

// Introspection Function
.test {
  font-family: global-variable-exists(myFont); // returns true in compiled view
}

// Color Function
section {
  background-color: hsl(120, 100%, 75%, 0.3); // light green with opacity
}
!

JS
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999px

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