The background has the potential of creating headaches, fading it down would make it much better. Try fading it down until you can barely see the stripes and then turn it up just a notch or two.

The menu looks a bit strange to me. There is too much space around the text and not enough room inside the words. Try reducing the margins and raising the tracking (letter spacing). I'm not a big fan of the typeface either, maybe if it was smaller it would look better.

The body text needs more leading (line height) and the heading should align with the text.

Apart from those issues I think it's a good simple design that is easy to navigate and doesn't distract from the content.