Changed #nav `z-index` so that it's always on top
(currently only a 2 is neeeded, but a 10 is more future-proof)
Fixed code indentation
(missing space made it standard text instead)
Merge pull request #14 from 1ace/menu-zindex

Changed #nav `z-index` so that it's always on top
Merge pull request #15 from 1ace/indent-fix

Fixed code indentation