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POWhy does progress { border: 0 } remove the default appearance of <progress>?
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copied!<p><strong>Tested in:</strong> Chrome 23, Firefox 15, Opera 11 (don't have IE10 or Safari 6)</p> <p>With this HTML:</p> <pre><code><progress value=3 min=1 max=10></progress> </code></pre> <p>and this CSS:</p> <pre><code>progress { border: 0 } </code></pre> <p>...the default browser rendering of the element disappears. Instead, it's replaced by a basic bar. Firebug and Chrome's web inspector indicate that the element did not initially have border-width.</p> <p>Oddly, if <code>0</code> is replaced with <code>none</code>:</p> <pre><code>progress { border: none } </code></pre> <p>...Chrome is unaffected, but FF and Opera are the same.</p> <p>Incidentally, how then can this basic bar be styled? Where does documentation for this sort of thing (and others, such as styling <code>input[type=file]</code>) exist?</p> <p><hr /> <strong>Screenshots:</strong> <br /> The first progress bar is always the native, unstyles variant. <br /> <br /> Chrome 23, Windows 8: <br /> <img src="https://i.stack.imgur.com/hYKfw.png" alt="Chrome 23, Windows 8"></p> <p>IE 10, Windows 8: <br /> <img src="https://i.stack.imgur.com/I6VgY.png" alt="IE 10, Windows 8"></p> <p>Chrome 23, Mac OS X 10.6.8: <br /> <img src="https://i.imgur.com/2veMf.png" alt="Chrome 23, OS X 10.6.8"></p> <p>Firefox 15, Mac OS X 10.6.8: <br /> <img src="https://i.imgur.com/yBelX.png" alt="Firefox 15, OS X 10.6.8"></p> <p>Opera 12, Mac OS X 10.6.8: <br /> <img src="https://i.imgur.com/lzcbz.png" alt="Opera 12, OS X 10.6.8"></p>

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