index.html

<style>
  body{
    background-color: #333;
    color: #222;
    padding: 20px;
    font-family: "Helvetica Neue", Helvetica;
    line-height: 150%;
    font-size: 14px;
    text-shadow: 0 1px 1px #fff;
  }

  div.outer{
    margin: 10px auto;
    max-width: 700px;
    background-color: #888;
    -webkit-border-radius: 8px;
    -webkit-box-shadow: 0 0 10px #000;
  }

  div.inner{
    top: -5px;
    padding: 20px;
    position: relative;
    background-color: #eee;
    border-top: 1px solid #fff;
    border-bottom: 1px solid #777;
    -webkit-border-radius: 5px;
    -webkit-box-shadow: inset 0 0 10px #666;
  }

  h1{
    font-size: 200%;
    font-weight: 900;
    margin: 10px 0 20px 0;
  }

  p{
    margin-bottom: 20px;
  }

  a.button{
    font-size: 120%;
    font-weight: 900;
    color: #eee;
    text-align: center;
    text-shadow: 0 -1px 1px #000;
    text-decoration: none;
    display: block;
    background-color: #222;
    -webkit-border-radius: 8px;
    -webkit-box-shadow: 0 5px 5px #888;
    margin-bottom: 5px;
    border: 3px solid #000;
  }

  a.button span{
    top: -5px;
    padding: 10px;
    position: relative;
    background-color: #444;
    border-top: 1px solid #333;
    display: block;
    -webkit-border-radius: 5px;
    -webkit-box-shadow: inset 0 0 10px #333;
  }

  a.button:active{
    -webkit-box-shadow: 0 2px 5px #888;
  }

  a.button:hover span{
    top: -4px;
  }

  a.button:active span{
    top: 0;
  }
</style>

<div class="outer">
  <div class="inner">
    <h1>Lorem ipsum dolor sit amet</h1>

    <p>
      Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.
    </p>

    <a class="button" href="#"><span>Go!</span></a>
  </div>
</div>

Neat. For the curious, the gist as an interactive jsFiddle demo.

@beaumartinez thanks for putting it on jsFiddle for me! I updated it a little bit so it looks good when the default styles are reset: http://jsfiddle.net/byBSR/6/embedded/result/ :)