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Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

            
              <div class="content">
  <h1>Pookie the Pug
            <span>at home!</span>
        </h1>

  <nav>
    <ul>
      <li><a aria-pressed="true" class="env home active" data-title="at home!" href="https://s3-us-west-2.amazonaws.com/s.cdpn.io/244725/home.jpg" role="button" tabindex="1">Home</a>
      </li>
      <li><a aria-pressed="false" class="env park" data-title="at the park!!" href="https://s3-us-west-2.amazonaws.com/s.cdpn.io/244725/park.jpg" role="button">Park</a>
      </li>
      <li><a aria-pressed="false" class="env beach" data-title="at the beach!" href="https://s3-us-west-2.amazonaws.com/s.cdpn.io/244725/beach.jpg" role="button">Beach</a>
      </li>
      <li><a aria-pressed="false" class="env ski" data-title="skiing!" href="https://s3-us-west-2.amazonaws.com/s.cdpn.io/244725/skiing.jpg" role="button">Skiing</a>
      </li>
      <li><a aria-pressed="false" class="env space" data-title="in space!" href="https://s3-us-west-2.amazonaws.com/s.cdpn.io/244725/space.jpg" role="button">Space</a>
      </li>
    </ul>
  </nav>

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        <div class="block blank" data-size="6"></div>
      </div>

      <div class="row" id="row-25">
        <div class="block blank" data-size="3"></div>

        <div class="block black" data-size="1"></div>

        <div class="block brown" data-size="5"></div>

        <div class="block black" data-size="2"></div>

        <div class="block brown" data-size="1"></div>

        <div class="block black" data-size="1"></div>

        <div class="block brown" data-size="3"></div>

        <div class="block black" data-size="5"></div>

        <div class="block brown" data-size="2"></div>

        <div class="block black" data-size="2"></div>

        <div class="block blank" data-size="6"></div>
      </div>
  </div>
  </a>
</div>

<p>
  <audio>
            <source src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/244725/bark.mp3" />
        </audio>
</p>

<div aria-hidden="true" class="images">
  <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/244725/park.jpg" />
  <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/244725/beach.jpg" />
  <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/244725/skiing.jpg" />
  <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/244725/space.jpg" />
</div>
            
          
!
            
              body {
  transition: all 0.5s ease;
  background: url(https://s3-us-west-2.amazonaws.com/s.cdpn.io/244725/home.jpg) no-repeat center center fixed;
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;
}

h1 {
  position: absolute;
  top: -9999px;
}

.images {
  display: none;
}

nav {
  position: absolute;
  left: -10px;
  top: 20%;
  border: 7px solid #999;
  background: #999;
  border-radius: 3px;
  -moz-box-shadow:    6px 6px 0px 0px #444;
  -webkit-box-shadow: 6px 6px 0px 0px #444;
  box-shadow:         6px 6px 0px 0px #444;
  z-index: 2;
}

.env {
  width: 50px;
  height: 50px;
  display: block;
  text-indent: -99999px;
  overflow: hidden;
  margin-left: auto;
  margin-right: auto;
}

.env.home {
  background: #999 url(https://s3-us-west-2.amazonaws.com/s.cdpn.io/244725/pixel_house.jpg) no-repeat center center;
}

.env.park {
  background: #999 url(https://s3-us-west-2.amazonaws.com/s.cdpn.io/244725/pixel_park.jpg) no-repeat center center;
}

.env.beach {
  background: #999 url(https://s3-us-west-2.amazonaws.com/s.cdpn.io/244725/pixel_beach.jpg) no-repeat center center;
}

.env.ski {
  background: #999 url(https://s3-us-west-2.amazonaws.com/s.cdpn.io/244725/pixel_snow.jpg) no-repeat center center;
}

.env.space {
  background: #999 url(https://s3-us-west-2.amazonaws.com/s.cdpn.io/244725/pixel_space.jpg) no-repeat center center;
}

.env.active {
  border: 3px solid #ff9120;
}

.canvas-wrapper {
  position: absolute;
  width: 100%;
  bottom: 0;
}
.canvas {
  display: block;
  margin: auto;
  position: relative;
}

.woof {
  transition: all 0.5s ease;
  position: relative;
  z-index: 20;
  left: 65%;
  top: 50%;
  opacity: 0;
}

.woof.barking {
  opacity: 1;
}

.row {
  clear: both;
  position: relative;
}

.block {
  float: left;
}

.black {
  background: #333;
}

.grey {
  background: #666;
}

.brown {
  background: #ACA582;
}

.white {
  background: #eee;
}

.pink {
  background: #CC8099;
}

.woofbg {
  background: #fff;
  background: rgba(255, 255, 255, 0.9);
}

.orange {
  background: #ff9120;
}
            
          
!
            
              (function() {

  var CONST = {
    COLS: 32,
    ROWS: 25
  },

  CLASS = {
    ACTIVE: 'active',
    BLOCK: 'block',
    BARKING: 'barking',
    CANVAS: 'canvas',
    ENV: 'env',
    WOOF: 'woof'
  },

  ATTR = {
    ARIA_PRESSED: 'aria-pressed',
    BG_IMG: 'background-image',
    DATA_TITLE: 'data-title',
    DATA_SIZE: 'data-size',
    HREF: 'href'
  },

  EVT = {
    CLICK: 'click',
    RESIZE: 'resize'
  },

  TAG = {
    A: 'A',
    AUDIO: 'audio',
    BODY: 'body',
    DIV: 'div',
    H1: 'H1',
    NAV: 'nav',
    SPAN: 'span'
  },

  SEL = {
    ENV: '.' + CLASS.ENV,
    BLOCK: '.' + CLASS.BLOCK,
    CANVAS: '.' + CLASS.CANVAS,
    WOOF: '.' + CLASS.WOOF
  },

  WINDOW = window,
  BODY = document.getElementsByTagName(TAG.BODY)[0],
  BLOCKS = document.querySelectorAll(SEL.BLOCK),
  CANVAS = document.querySelector(SEL.CANVAS),

  barking = false,
  blockSize, i;


  function _hasClass(el, c) {
    return (' ' + el.className + ' ').indexOf(' ' + c + ' ') > -1;
  }

  function _addClass(el, c) {
    var classes = el.className;

    if (!el || !c) return;

    if (!classes) {
      el.className = c;
    } else {
      if (classes.indexOf(c) !== '-1') {
        el.className = classes + ' ' + c;
      }
    }
  }

  function _removeClass(el, c) {
    var classes = el.className;

    if (!el || !c || !classes) return;
    classes = classes.replace(' ' + c, '');
    classes = classes.replace(c + ' ', '');
    classes = classes.replace(c, '');

    el.className = classes;
  }

  function _getViewportWidth() {
    return WINDOW.innerWidth;
  }

  function _getViewportHeight() {
    return WINDOW.innerHeight;
  }

  function _getUnitSize() {
    var vw = _getViewportWidth(),
        vh = _getViewportHeight();

    return (vw > vh) ? ((vh / CONST.ROWS) * 0.7) : ((vw / CONST.COLS) * 0.7);
  }

  function _setBlockSize() {
    blockSize = _getUnitSize();
  }

  function _setCanvasSize() {
    CANVAS.style.width = (blockSize * CONST.COLS) + 'px';
    CANVAS.style.height = (blockSize * CONST.ROWS) + 'px';
  }

  function _woof(evt) {
    evt.preventDefault();
    var audio = document.getElementsByTagName(TAG.AUDIO)[0],
        woof = document.querySelector(SEL.WOOF);

    if (!barking) {
      barking = true;
      _addClass(woof, CLASS.BARKING);
      audio.play();
      setTimeout(function(){
        _removeClass(woof, CLASS.BARKING);
        barking = false;
      }, 900); // 2s is the time of the audio clip
    }
  }

  function _toggleEnv(evt) {
    evt.preventDefault();
    var me = evt.target,
        textSpan = document.getElementsByTagName(TAG.SPAN),
        envLinks = document.querySelectorAll(SEL.ENV),
        i, thisLink,
        url, text;

    // Set all the current item to invalid and enable the new one
    for (i = 0; i < envLinks.length; i++) {
      thisLink = envLinks[i];
      _removeClass(thisLink, CLASS.ACTIVE);
      thisLink.setAttribute(ATTR.ARIA_PRESSED, false);
    }
    _addClass(me, CLASS.ACTIVE);
    me.setAttribute(ATTR.ARIA_PRESSED, true);

    // Get the new image and text from the DOM
    url = me.getAttribute(ATTR.HREF);
    text = me.getAttribute(ATTR.DATA_TITLE);

    // Update the background image
    BODY.style.backgroundImage = 'url(' + url + ')';

    // Update text in h1
    for(i = 0; i < textSpan.length; i++) {
      if(textSpan[i].parentNode.tagName === TAG.H1) {
        textSpan[i].innerHTML = text;
        break;
      }
    }
  }

  function _renderBlocks() {
    var i = 0,
        thisBlock,
        size;

    _setBlockSize();
    _setCanvasSize();

    for (i; i < BLOCKS.length; i++) {
      thisBlock = BLOCKS[i];

      size = (thisBlock.getAttribute(ATTR.DATA_SIZE) * blockSize) + "px";
      thisBlock.style.width = size;
      thisBlock.style.height = blockSize + 'px';
    }
  }

  function _eventListeners() {
    WINDOW.addEventListener(EVT.RESIZE, _renderBlocks);

    CANVAS.addEventListener(EVT.CLICK, _woof);

    document.getElementsByTagName(TAG.NAV)[0].addEventListener(EVT.CLICK, function(evt){
      if(_hasClass(evt.target, CLASS.ENV)) {
        _toggleEnv(evt);
      }
    });
  }

  _renderBlocks();
  _eventListeners();
})();
            
          
!
999px
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