template body disappears in comments page

Hi everyone! I’m new at wordpress! recently i’ve installed wordpress for a client’s site and i seem to be having probs with the comment page. The template body (middle part that’s suppose to expand) disappears when i view the comments and the comments form seems to be overlapping the footer. Here’s the page i’m working on.
https://energyoptimizerplus.com/blog/?p=1#comments
Can someone pls help me out? i’m not sure how to go about rectifying it. Thanks in advance.