Sub Nav doesnt appear over the image in ie7

问题

This is possibly the most irritating thing ever.

I've spent a long long time troubleshooting to this to no avail, so please someone help put me out of misery!!

I'm trying to float the sub nav under products over the image below in IE7. Easy? NOPE!

回答1:

• On #menu ul, remove position: relative.
• On #header, remove position: relative, and add some high z-index value.
  I tested it with z-index: 300.

See this previous answer of mine for further information about the nature of the bug.

来源：https://stackoverflow.com/questions/5306412/sub-nav-doesnt-appear-over-the-image-in-ie7