I've built this site (http://www.wallbrink.com.au/concrete5/) which looks fine in the latest versions of Firefox, Chrome and Safari, but in IE8 on XP there are horizontal gaps between the divs near the left bottom of the page, and the drop-down menu doesn't work properly.
Someone suggested adding a strict doctype
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
which I have done at the top of the page template, but it doesn't appear to have fixed the issue.
Also, I added
<meta content="IE=edge,chrome=1" http-equiv="X-UA-Compatible" />
in the footer (so it comes in the header after the <title> tag, which is supposed to prevent IE going into quirks mode, but no joy with that either.
Does anyone have any idea what might be causing it?