Strike that, I found your page. You need to change the z-index of the social buttons. You can do that with the following style to make the main menu go on front of the buttons as expected:
div.scsocialbuttons {
z-index: 1 !important;
}
Putting this into the browser tools for index.php/dimmer-lamps/the-minimalist.html seemed to fix the issue so give it a try and let us know if you still have problems.
-Melissa