white space below secondary menu

@Peter: You can add the following css in “Appearance => Theme Options => Custom CSS” box:
#main { padding-top: 0; }

Also, I see that you have following css in Custom CSS, which you need to change it. So, find the following css:
.page .entry-title { display: none; }
and replace it with following:
.page .entry-header { display: none; }