Customizing Edu-Clean Login and Font Size

I'd like to remove the login box on the homepage of the edu-clean theme. I've created a child theme but can't figure out which file is making the call for the login box to appear. I've tinkered with the ../lib/templates/wp-template/front-right.php to no avail.

Also, I'd like to increase the default font size of blog posts and page text. I've tried to do this through the backend, from the theme settings admin area, but when I try it, I end up increasing the size of EVERYTHING, all text on the site -- I want the rest of the text on the site to remain as is, just want to increase the size of the blog posts and page text, understand? I have the custom css plugin installed, just need to know what to put in there. Can you help me out?