ASP.NET website looks different when deployed

PROBLEM:

ASP.NET website looks different when deployed and browsed with IE 8. Borders in gridviews disappearing in the published site, simple html horizontal rules aren't the same, CSS behaving differently on deployment. This behevior occure when browsing IE

SOLUTION:

Put META Tag in HEAD element of your aspx web pages (or better in master page)

<meta http-equiv="X-UA-Compatible" content="IE=8" /> 


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