Please follow steps:

1. Open http://www.opcodeservices.com/TestWebApp/trims-prices.html in IE

2. Click "File"=>"Save As", set "Save As Type" to "Webpage,complete" in popup dialog, and save it to "test.html"

3. Open saved "test.html" in IE&Firefox

You will find same look and feel. You need narrow this issue by checking your style setting.

 

Regards,

Eric