Hi, I'm very new to wordpress, and website editing in general (I'm just picking up editing a pre-existing website on someone else's behalf), and was finding it ok until this problem suddenly started. When I hover over the navigation tabs to view the dropdown list of pages, the pages have started appearing behind the header. Please take a look at http://www.cambridgecapp.wordpress.com.
Would much appreciate any help!
The blog I need help with is cambridgecapp.wordpress.com.