Greetings. I have a site that I've been developing for a while now using the wordpress format. At some point, the css no longer worked in the footer. Some of the earlier styles are now carrying down all the way to the footer. For instance, the four red <h3> colored headers in the footer shouldn't be like that. They should be reversed out on a dark background.

This appears to be an issue in every browser but Safari ... for some reason Safari is showing it correctly.

I gather from trying to validate the page that there are some errors, but I have no idea what to do about these errors.

For example the validator says:

Line 124, Column 69: Duplicate ID s.
<input type="text" name="s" id="s" class="search-text-box" />

That form input is part of the theme ... I didn't add that. Elsewhere it says:

Line 566, Column 55: End tag li seen, but there were open elements.
<li><a href="index/case-studies/">Case Studies</li>

When I check that code, the list elements appear to be fine.

I'm wondering if anybody can set me on the path towards debugging this thing. I have no idea where to start.

Here's my dev url: http://sterling-testing.com/

Thanks