Formatting Issue

Please take a look at http://69.195.124.69/~localsp4/niagaraicedogs/my-posts/?task=new

As you can see, the editor does not look right. The Visual/Text buttons are cut off at the bottom and the background of the buttons are different from the area behind the buttons.

How can I fix this so it looks proper?

https://wordpress.org/plugins/frontier-post/