Single Blog Page Customizing

Hi,

I’m having some trouble with single blog post pages and I’m not quite sure where to go to fix it. The URL is http://scottclients.com/sector9/2017/09/20/label-printer-comparison-epson-c3500-primera-lx1000/

I want to make the background solid white (not the current background image that I use on the front page) and get rid of the comment box at the bottom. Can you direct me to the settings to change this or help me figure out the CSS I’d need?

Thanks!