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Problem rounding the corners and using box shadow with ie 7
Honestly I wouldn’t bother ensuring the corners are rounded in IE7, only 16.1% of users use IE as of October 2012, of that only 1.2% use IE7. That means about 0.19% of browsers out there are IE7. Browser stats can be found at the following if you need to explain this to a client http://www.w3schools.com/browsers/browsers_explorer.asp