Responsive Mobile Site

Hello,

I have two questions about the mobile view of my WordPress site.

1) When I go to the website on a mobile phone and open the sidebar menu, I don’t see the category texts unless I tap on it. I thought it might be because the text color was white but I checked and that doesn’t appear to be the case. How can I make sure the text shows up and can be read?

2) Is there any way to make the feature image on my blog posts bigger for the mobile version? Right now, I see a small picture and a lot of unnecessary space between the picture and the heading.

Thanks in advance!

The page I need help with: [log in to see the link]