In
www.nicolehamlett.com/templates/11/css/template.css at line 1257, in the .art-post style area, the z-index is set to "0". Remove that line.
Then, and I'm not sure what file this is in because it's a compressed/optimized file, look for the .art-post-body style. In that section, there is a z-index set to '1'. Remove that line.
With those two changes, you should be good to go! If those don't help, leave the lines changed and let us know.. we can look again and let you know if there's something else causing the problem.
Keep us posted, and good luck,
Alex