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Editorial Team
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Asked: 2026-05-14T15:55:47+00:00

I have 2 div’s contained in a third. One of the contained div’s is

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I have 2 div’s contained in a third. One of the contained div’s is floated left, the other floated right. I would like the 2 sibling div’s to always be at the same height, but am having a problem with this. So far I am only viewing the page in Firefox, and figured I’d worry about any cross-browser issues after I get it working in at least one browser.

Here is the markup:

<div id="main-container" class="border clearfix">
    <div id="left-div" class="border">
        ...
    </div>
    <div id="right-div" class="border">
        ...
    </div>
</div>

Here is the CSS:

#main-container     { position: relative;                             min-height: 500px; }
    #left-div       { position: relative; float: left;  width: 700px; min-height: inherit; }
    #right-div      { position: relative; float: right; width: 248px; min-height: inherit; height: inherit; }

.clearfix:after     { content: " "; display: block; height: 0; clear: both; visibility: hidden; }
.clearfix           { display: inline-block; _height: 1%; clear: both; }
.clearfix           { display: block; clear: both; }
.border             { border: solid 1px #000; }

If the content in the #left-div is longer than 500px, the #right-div does not expand to match. In an example I tried, Firefox said the computed style height of the #main-container was 804px, the computed style height of the #left-div was 800px, and the computed style height of the #right-div was 586.2px, as it had expanded to fit it’s own content.

I understand I might be going about this the wrong way, and if this is a duplicate questions then I apologize, but I wasn’t quite sure what to search under.

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1 Answer

  1. Editorial Team

    I can rack my brain all I want, but I think this can really be solved only using table behaviour, i.e. using <table>s (if you need to be IE6 and IE7 compatible) or display: table / table-row / table-cell (which is effectively the same thing but won’t embarrass you in front of your peers because tables are evil. ;).

    I’d go for a table.

    Feel free to prove me wrong and post a sane CSS solution, I’d be delighted!

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