title: IE9 filter dropshadow bug?
body: <p>In IE9 the input isn't visible. Is it IE9 bug? It's caused by filter dropshadow.</p>
  
  <pre><code>input {
    width: auto;
    padding: 5px 10px;
    border-radius: 5px;
    border: none;
    background: #e75012;
    color: #fff;
    font-weight: bold;
    cursor: pointer;
  
    text-shadow: 2px 1px 1px #000;
    filter: dropshadow(color=#000, offx=2, offy=1);
  }
  </code></pre>