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    <p>1: Format your css please.<br> 2: That code seems to be missing the bits that actually make it work?</p> <p>Now as for the answer:<br> General concept: you should set the child elements (.dropdown) to <code>width:100%</code>, and your parent elements (.top_level) should have <code>position:relative;</code> set. <br> This means that the absoute positioning of the children will be done relative to the parents (This is to do with the weirdness about how positioning <a href="http://www.w3.org/wiki/CSS_absolute_and_fixed_positioning#Containing_blocks">interprets your wishes.</a>), and then their width will be set to be the same as the parents' width. Yay! </p> <p>Then of course, that doesn't actually work - I believe because of your <code>display:inline</code> on your top levels there. I've changed your parent elements to display:block;, then made them float to bring them back up next to each other again.</p> <p>[You could also do this with <code>display:inline-block;</code> instead of the float, depending on what kind of behaviour you actually want]</p> <p><b>See revised (indented) css:</b></p> <pre><code>#menu li.top_level{ vertical-align:top; zoom:1; display:block; float:left; width:auto; position:relative; margin:2px;padding:0 1px 0; } #menu .dropdown{ float:none; z-index:100; position:absolute; width:100%; height:0; overflow:hidden; -webkit-transition:height 700ms;-moz-transition:height 700ms; } #menu .category:hover .dropdown,#menu .category:focus .dropdown{ -webkit-transition:height 940ms; -moz-transition:height 940ms; height:auto; } </code></pre> <p>I've also thrown up a demo on jsfiddle to work on this, if you want to take a look: <a href="http://jsfiddle.net/UPRAc/1/">http://jsfiddle.net/UPRAc/1/</a></p>
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    1. POHow do I keep dropdown menus the same width of top level categories with auto width
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    1. COAnd just as a side note - I'm not sure this is exactly how I'd write a dropdown menu. The height/overflow system of hiding things really doesn't sit well with me. I'd be more inclined to use display:none; to hide and display:block; to show.
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    2. COGreat stuff man!
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