You could start by sorting out the validation errors on the site. Then move onto the CSS errors.
Thank you for your help. I was not aware these sites existed. In going over the css again – I was actually able to fix the problem by altering the ‘code’ style. I honestly don’t understand what the ‘code’ style affects – but somehow from changing the text-size from 1.1 em to 1 em, all was fixed.
I feel like this is still a temporary solution to the problem – there must be something else that went wrong. I attempted to fix some of the errors, but I’m not super fluent in php, so it ended up doing more harm than good. Is there a good resource to learn about these types of things? I think I can handle the CSS errors. Also – is it possible some of these errors are already in the theme’s code, before I started messing with it?