new theme is distorted in Firefox but not IE

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You need to validate your site.

so i just go in and correct the errors?

but most of the stuff that its saying is missing is already there…..btw thanks for replying ??

You have unclosed div tags. These code errors cause major display problems and need to be fixed. As to one reason why you have so many code errors, see: https://codex.www.ads-software.com/HTML_to_XHTML

my errors are right be its still distorted. ??

There are so many HTML errors on that page that it will NEVER render right unless you correct them all. The validator at https://validator.w3.org for your front page shows 344 errors and 44 warnings. Fix that, then troubleshoot for cross-browser compatibility.