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About the <head>

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CSS

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JavaScript

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HTML 

              
                <header>
  <nav class="global-nav">
    <ul>
      <li><a href="https://codepen.io/MelissaMMDP/pen/rVOGOQ" target="_blank">Grid</a></li>
      <li><a href="https://codepen.io/MelissaMMDP/pen/MwaEyB" target="_blank">Color</a></li>
    </ul>
  </nav>
</header>

<main class="main-intro">
  <h1>Sticky Footer <span class="animated bounceInDown">Magic</span></h1>
  <p>Please enjoy this simple CSS sticky footer <span class="icon-heart">&#10084;</span></p>
  <p class="muggle"><a href="https://codepen.io/MelissaMMDP/pen/LMbVQp" target="_blank">muggle sticky footer</a></p>
</main>

<footer>
  <p>
    <small>&copy; 2015 Melissa Canada</small>
  </p>
</footer>
!

CSS 

              
                // ---------- VARIABLES (extra)

// GRID

//== box-sizing variable
@box-sizing: border-box;

//== column variables
@float: left;
@text-align: left;

//== width variables
@max-width: 1280;
@min-width: 320;

// FONT

// google web font imports
@import url(https://fonts.googleapis.com/css?family=Open+Sans:600,400,300);
@import url(https://fonts.googleapis.com/css?family=Open+Sans+Condensed:300);

// font variables
@font-size: 16; // required by .grid mixin


// ---------- MIXINS (extra)

// GRID

//== clearfix mixin (required by .grid mixin)
.clearfix() {
  &:before, &:after {
    content: "";
    display: table;
    clear: both;
  }
}

//== box-sizing mixin
.bxz (@bxz: @box-sizing) {
  -webkit-box-sizing: @bxz;
  -moz-box-sizing: @bxz;
  box-sizing: @bxz;
  *, *:before, *:after {
    box-sizing: inherit;
  }
}

//== grid mixins
// full width grid - always included
.grid (@mixin; @maw: @max-width) {
  margin: 0 auto;
  width: 100%;
  .clearfix;
}

// full width grid mixin
.grid (@mixin; @miw: @min-width; @maw: @max-width) when (@mixin = full) {}

// max width grid mixin
.grid (@mixin; @maw: @max-width; @miw: @min-width) when (@mixin = maw) {
  max-width: unit((@maw / @font-size), em);
}

//== column mixin
.col(@span; @fl: @float; @ta: @text-align) {
  float: @fl;
  text-align: @ta;
  width: ((100% / 12 * @span)*1.0);
}


// ---------- pen STYLES

// GENERAL

html {
  .bxz;
  font-size: 100%;
  min-height: 100%; // !important - footer
  position: relative; // !important - footer
}

body {
  background: #ffffff;
  color: #000000;    
  font-family: 'Open Sans', sans-serif;  
  font-size: 16px;
  font-weight: 400;
  line-height: 1.4; // !important unit-less to avoid poor inheritance behavior  
  margin-bottom: 5em; // !important - footer
  text-align: center;
}

main {
  .grid(full);
  padding: 2.5em 0;
}

h1 {
  color: #d92626;
  font-family: 'Open Sans Condensed', sans-serif;  
  font-size: 2.25em;
  font-weight: 400;
  line-height: 2.25;
  padding: 0.2777777777777778em;
  text-align: center;  
}

h1, p, ul {
  margin: 0;
}

ul {
  list-style: none;
  padding: 0;
}

a {
  &:link, &:visited {
    color: #d92626;
    text-decoration: none;
  }
  &:hover {
    color: #d92626;
  }
}

.muggle {
  margin-top: 10px;
}

.muggle a {
  &:link, &:visited {
    background-color: #d92626;
    color: #fff;
    padding: 10px;
    text-decoration: none;    
  }
  &:hover, &:active {
    background-color: #4db2Cb;
  }
}

// HEADER

header {
  .grid(full);
  background: rgba(255, 255, 255, 0.8);
  border-bottom: 0.0625em solid lightgrey;    
  left: 0;
  margin-bottom: 1.25em;
  position: fixed;
  top: 0;
}

.global-nav {
  li {
    float: left;
    a {
      display: block;
      padding: 0.875em 0.9375em;
      &:link, &:visited {
        color: #d92626
      }
      &:hover {
        background: #d92626;
        color: #ffffff;
      }
      &:focus {
        background: #d92626;
        color: #ffffff;
      }
    }
  }
}

// MAIN

.icon-heart {
  color: #d92626;
}

.main-intro {
  .grid(maw);
  p {
    .col(12; @ta: center);
    padding: 0 1.25em 1.25em 1.25em;
  }
}

// FOOTER

footer {
  .grid(full);
  background: #ffffff;
  border-top: 0.0625em solid lightgrey;
  bottom: 0; // !important helps maintain set height 
  color: #000000;   
  height: 5em; // !important - must be < = body margin-bottom
  position: absolute; // !important clears
  p {
    .col(12; @ta: center);
    padding: 1.25em;
  }
}
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