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<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>JS Bin</title>
</head>
<body>
  <h1>window.matchMedia Demo</h1>
 <p class="desc">I wrote a blog post about window.matchMedia and this is the demo to go with it. matchMedia is pretty good, so perhaps you may want to <a href="http://mrqwest.co.uk/blog/561/getting-to-grips-with-windowmatchmedia"" title="Getting to Grips with matchMedia">go and read the post</a>?</p>
  <h2>Is the browser wider than 500px?</h2>
  <p id="match" class="match">?</p>
  <p class="help">Adjust the size of your viewport.</p>
   <footer>
   <p>Find me on <a href="http://twitter.com/mrqwest" title="@mrqwest on twitter">twitter</a> or on <a href="http://mrqwest.co.uk" title="MrQwest">my own blog</a></p>
   </footer>
</body>
</html>
 
* {box-sizing: border-box;}
​
body {
  font-family: sans-serif;
  color: #333;
  line-height: 1.4;
  margin: 0;
}
​
h1, h2, p {
    padding: 0 1rem;
}
​
.desc {
  font-color: #333;
​
}
​
a {
  color: #e24234;
  
}
​
.match {
  text-align: center;
  font-size: 3rem;
  font-weight: bold;
  color: #e24234;
  background-color: #fff;
  border: 1px solid #eee;
  padding: 1rem;
  border-radius: 0.3rem;
  box-shadow: 0 0 1rem rgba(0,0,0,.02);
  width: 80%;
  display: block;
  margin: 5rem auto 0;
​
  
}
​
.help {
  font-size:0.8rem;
  text-align: center;
  font-style: italic;
  color: #888;
}
​
footer {
  font-size: 0.7rem;
  text-align: center;
  position: absolute;
  bottom: 0;
  width: 100%;
  background-color: #eee;
  margin-left: -8px;
  margin: 0 auto!important;
  display: block;
  padding: 0;
}
Output

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