Gmail stretches off screen
When I check email while using Safari, the Inbox bleeds off the screen to the right.
As you can see I cannot access settings. I was able to log off remotely through another browser and change Themes but had the same issue. I was not able to deselect Themes however to test whether that might return my Inbox to normal. What should I do to get my Inbox back? I am using OS X 10.11.1 and Safari 9.0.1
iMac, OS X Mavericks (10.9.5), Safari 7.1.8