Bug Report: Class options invisible due to black block in Safari

See attached screenshot. The class options are unselectable due to a black block superimposed on the options. It blocks just about everything from level 1 to level 8.
This happens with Safari. I have tested it on Chrome and then it works just fine, so it seems a Safari/webkit issue.

(edit: typos)

Thanks for reporting! We’re working on improvements for the builder in Safari. :slight_smile: