Sparkatale

So I like my words to be decently big, which I guess is a lot bigger on a laptop than on a desktop. The problem is that any pop-up (or whatever you call it) such as when I write comments and reviews, gets enlarged so that the post button is off the screen at the bottom. If I want to post, all I have to do is zoom out, but I was hoping there was a way to just scroll down; that would make things a lot easier, I think. I don't know if other people have the same issue: I'm on a macbook pro and I'm on firefox. I haven't tried other browsers, not sure if this factors into it. Thanks!