When I take a look at your site, I can see what you mean. Firefox looks right and IE places a giant white space in the middle of your page. IE and FF unfortunately interpret CSS differently sometimes. Taking a look at the source code, I see this-
<div class="post_info">
<h2><a href="https://www.clickthismarketing.com/%/postname/%" rel="bookmark" title="Small Business Marketing & Advertising In Orange County">Small Business Marketing & Advertising In Orange County</a></h2>
<span class="author"></span>
<span class="category"> </div>
What you have here is an empty span named ‘author’, which is open and closed. Then we have a span named ‘category’, which is open, but not closed until later. FF is a little better an interpreting this and filling in the close. IE however is not. It is instead placing the next pieces of code outside a general area for where this category span is. See if you can add a </span>
close tag in there. Good luck.
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