openclipart frontpage lays out wrong the "forward arrow" graphic is on the wrong line.
Created attachment 10210 [details] Screenshot showing the problem
Created attachment 10211 [details] Reduction Opera and Safari don't grow the div all the way to the right when it contains a right float. Firefox and IE do. Specifically with openclipart, they actually try not to rely on the float to make the div stretch, but they have a typo in default.css (missing a semicolon after z-index: 2): #search { position: absolute; left: 0; top: 100px; z-index: 2 width: 100%; min-width: 700px; Fixing the typo fixes the layout.
Filed https://bugs.freedesktop.org/show_bug.cgi?id=8460
The openclipart.org CSS is fixed now.
(In reply to comment #4) > The openclipart.org CSS is fixed now. > The difference in behavior between Firefox and WebKit is tracked by bug 10085. *** This bug has been marked as a duplicate of 10085 ***