There’s some bugs when resizing the browser window: The borders in the corners of the “main content” do not look good when resizing. I see the bug in all browser sizes. When you load the page for the first time in a window > 900px wide, everything looks good, but if you load it in a window < 900px wide, elements overlap, I think almost all the problems are related to the borders in the corners of the content. Also, when resizing to a smaller screen, elements looose their positions, and the hight of the page does not resize well.
Maybe you should write a jQuery function that dimention elements every time the browser window resizes, and every time the page loads.
When I say “the height of the page does not resize well” I mean this blank space between the elements. I think the .content div has a fixed height that does not fit well when the screen downsizes. Also, you can notice in the image below, the element that provide the borders in the corners, is not centered as well as the form either. The background in the image looks white, but that’s because there’s a problem with my addon to take screenshoots, your background looks good. By the way, I’m using the current version of Chrome to see your item.