Error in 'add a new course'

[Equillibrium]

Hello, I just went to the add a new course page and it suddenly looks like this:

Windows 8, Firefox. I tried to use Chrome and it displays it as usual, but with Firefox it doesn't.

[remoonline]

Try the following and see if it helps.

1. Logout of Duolingo
2. Clear browser cache and cookies
3. Login and check if the issue persists