can you describe what is wrong, or what you would expect to be different?
have you tried to ask for support from the theme seller, as you seem to be working with a commercial theme?
there is no style with a css class of .request
in your stylesheets at the moment.
also, you might be wrong with the css id of your nav – it is likely not #nav
.
all-in-all not a WordPress problem.
helping with brushing up fundamental knowledge of css is not within the scope of this WordPress forum.
ps:
the stray dot in the menu comes from this line:
<img class="facebook" src="http://174.120.189.222/%7Esos/wp-content/uploads/2012/02/button_rust.png" style="position: relative; top: 95px; left: 20px;">
possibly somewhere in header.php (?)