I'm having a rather annoying issue of Arras theme looking different on Firefox than it does on Internet Explorer.
I have put a navigation image (PNG) into the "nav-content" portion of header.php with a height of 78px and it shows up at its full height on IE. Yet on FF, the nav-content and sidebars float OVER the bottom part of the image, covering it.
Any ideas what is causing this and how to fix it?