Bug in Div height IE

Hihi,

I´m slicing down the main layout for a webpage. For some reason the div id="main" won´t align开发者_运维问答 to the header

url: http://nicejob.is/clients/pizzahollin/www/forsida.htm

As you can see the div id="main" (in green) match perfectly with the header in Chrome and Firefox, but in IE the "main" goes almost overlap the header

I´ve done this many times before without this bug so I don´t know what ghost is hunting me now

Any suggestions? :)

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try adding display:block; on the <header>