Page content is left justified in only Internet Explorer, should be centered

Hello!

I have been searching up and down for what might be making this happen. Everything looks great in firefox, chrome, safari, opera, etc. But with internet explorer 7 (I’ve already given up on trying to make it compatible with 6) the main content shifts all the way to the left.

This is especially noticeable on hi res wide screen displays. Can anyone help point me to the right direction to get that fixed? Thank you!

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