IE8, XHTML, position: fixed; and z-index.

Posted by Joel on Stack Overflow See other posts from Stack Overflow or by Joel
Published on 2010-06-02T11:10:57Z Indexed on 2010/06/02 11:13 UTC
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I have an XHTML 1.0 transitional Doctype.

I have a <div> that is position: fixed; bottom: 0px; left: 0px; width: 100%; z-index: 200;.

Inside that <div> I have two buttons which are position relative, aligned right, with a set z-index of 201;

In Firefox the bar at the bottom and the two buttons are correctly located at the bottom.

In IE8 however, the bar is visible and the z-index appears to be overlaying the other content, but the buttons are hidden behind the main div, despite being children and having their z-index set.

I'm using the following meta tag; <meta http-equiv="X-UA-Compatible" content="IE=edge" /> to force the document into IE8 mode.

If I emulate IE7 (put on compatability mode), the bar and buttons work just fine. I don't understand how IE7's rendering is better than IE8. I don't want to have to force compatability mode due to other things that IE7 cannot render and IE8 can. Is there another solution, or have I missed something?

Thanks.

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