Post Editor Text Only Halfway Across

Hello,

After the most recent update, the post editor returned to only allowing text halfway across the input box. I tried to follow the directions to remove this from the past, but editor-style.css has changed and I cannot figure it out.

Can someone tell me what to delete so I can type across the entire post editor?

I must say, I love this theme except for this. It is extremely annoying and I wish there an an easy button to turn it off!

Thanks!