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HTML 

              
                <nav id="global-nav" aria-label="Main navigation">
  <ul>
    <li><a href="#">Posts</a></li>
    <li><a href="#">Talks</a></li>
    <li><a href="#">About</a></li>
    <li><a href="#">Contact</a></li>
  </ul>
</nav>
<div id="container">
  <header role="banner">
    <div class="inner-header">
      <div class="header-flex">
        <h1 class="site-title">
      <!-- tabindex="1" so this link is always first in the tab order -->
           <a href="#" tabindex="1">
              Accessible Slide Menu
            </a>
         </h1>
        <button aria-controls="global-nav" aria-haspopup="true" tabindex="2" id="menu-button">
          <span class="menu-icon" aria-hidden="true">
            <svg version='1.1' x='0px' y='0px' width='30px' height='30px' viewBox='0 0 30 30' enable-background='new 0 0 30 30'><rect width='30' height='5'/><rect y='24' width='30' height='5' /><rect y='12' width='30' height='5'/></svg>
          </span>
          <span class="menu-text">Menu</span>
        </button>
      </div>
    </div>
  </header>
  <main>
    <section>
      <article>
        <h2>By <a href="http://marcysutton.com/">Marcy Sutton</a></h2>
        <h3>Some Bowie Ipsum for scrolling</h3>
        <p>Dignity is valuable, but our lives are valuable too. I would not challenge a giant. Hey, that's far out so you heard him too! Beware the savage jaw of 1984. Do you remember, the bills you have to pay?</p>
        <p>Throwing darts in lovers' eyes. Freak out!</p>
        <p>I've never done good things. As they pulled you out of the oxygen tent, you asked for the latest party. What you like is in the limo.</p>
      </article>
    </section>
  </main>
</div>
!

CSS 

              
                html, body {
  font-family: Roboto, Helvetica,sans-serif;
  margin: 0;
  padding: 0;
}

// Nav comes first in DOM order
nav#global-nav {
  background-color: #333;
  bottom: 0;
  max-width: 220px;
  overflow: auto;
  position: fixed;
  top: 0;
  right: -220px;
  width: 100%;
  z-index: 0;
  -moz-transition: all 300ms;
  -o-transition: all 300ms;
  -webkit-transition: all 300ms;
  transition: all 300ms;
  
  // slide in menu when .active class is added by JS
  body.active & {
    -moz-transform: translateX(-220px);
    -ms-transform: translateX(-220px); 
    -webkit-transform: translateX(-220px);
    transform: translateX(-220px);
  }
  
  ul {
    margin: 0;
    padding: 1em 0 0;
  
    li {
      border-bottom: 1px solid #474747;
      padding: 0;
      margin: 0;
      width: 100%;
      
      a {
        display: block;
        color: #fff;
        text-decoration: none;
        padding: 1.5em 0 1.5em 2em;
        
        &:hover,
        &:focus {
          background-color: #474747;
        }
        &:active {
          color: #9fbf00;
        }
      }
    }
  }
}

#container {
  position: relative;
  top: 0;
  right: 0;
  width: 100%;
  -moz-transition: all 300ms;
  -o-transition: all 300ms;
  -webkit-transition: all 300ms;
  transition: all 300ms;
  
  // Important detail for mobile: 
  //   container must be positioned on top of nav
  z-index: 1;

  // slide out container when .active class is added by JS
  body.active & {
    -moz-transform: translateX(-220px);
    -ms-transform: translateX(-220px); 
    -webkit-transform: translateX(-220px);
    transform: translateX(-220px);
  }
}
a {
  color: darkblue;
}
// Header
header[role=banner] {
  background-color: #333;
  box-shadow: -1px 3px 6px #13140F;
  padding: 1em 0;
  text-align: left;

  .inner-header {
    position: relative;
    padding: 0 1rem;
  }
  .header-flex {
    display: -webkit-flex;
    display: flex;
  }
  .site-title {
    font-family: 'Kaushan Script', cursive;
    font-weight: normal;
    font-size: 2.5rem;
    letter-spacing: 0.05em;
    line-height: 1;
    margin: 0.25em 0 0;

    a {
      color: #f7ffea;
      text-shadow: 2px 2px 4px #13140F;
      text-decoration: none;
    }
  }
}
#menu-button {
  background-color: transparent;
  border: 0;
  color: #fff;
  cursor: pointer;
  display: block;
  line-height: 1;
  min-width: 47px;
  margin: 0.5rem 0 auto auto;
  padding: 0;
  position: relative;
  text-align: center;
  z-index: 1;
  -moz-transition: all 300ms;
  -o-transition: all 300ms;
  -webkit-transition: all 300ms;
  transition: all 300ms;
  
  span.menu-icon {
    display: block;
    pointer-events: none;
    font-size: 3em;
    text-shadow: 2px 2px 2px #333;
    
    svg rect {
      fill: #fff;
    }
  }
  span.menu-text {
    display: block;
    font-size: 1.15em;
    margin-top: 0.5em;
  }
}
// Main content area
main {
  padding: 0 1rem;
  
  section {
    min-height: 700px;
  }
}
/* Utilities */
.visuallyhidden {
    border: 0;
    clip: rect(0 0 0 0);
    height: 1px;
    margin: -1px;
    overflow: hidden;
    padding: 0;
    position: absolute;
    width: 1px
}
!

JS 

              
                
var MS = {};

MS.App = (function() {

  var ESCAPE_CODE = 27;

  var navButton = $('#menu-button'),
      navMenu = $('#global-nav');
  
  var navLinks = navMenu.find('a');

  function initApp() {
    navMenu.on('keydown', handleKeydown);
    navButton.on('click', handleClick);
    disableNavLinks();
  }
  function handleKeydown(event) {
    if (event.keyCode === ESCAPE_CODE) {
      document.body.classList.toggle('active');
      disableNavLinks();
      navButton.focus();
    }
  }
  function handleClick(event) {
    if (document.body.classList.contains('active')) {
      document.body.classList.remove('active');
      disableNavLinks();
    }
    else {
      document.body.classList.add('active');
      enableNavLinks();
      navLinks.eq(0).focus();
    }
  }
  function enableNavLinks() {
    navButton.attr('aria-label', 'Menu expanded');
    navMenu.removeAttr('aria-hidden');
    navLinks.removeAttr('tabIndex');
  }
  function disableNavLinks() {
    navButton.attr('aria-label', 'Menu collapsed');
    navMenu.attr('aria-hidden', 'true');
    navLinks.attr('tabIndex', '-1');
  }

  return {
    init: function(){
      initApp();
    }
  }
})();

$(document).ready(function($) {
  new MS.App.init();
});
!
999px

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