Board Thread:Support Requests - Designing Your Wiki/@comment-44997843-20200704112131/@comment-26611127-20200705133440

I can confidently say the CSS I provided you with did not cause the issue seen in your above image.

I tested the CSS before posting it in this thread, and it did not have any unintentional consequences. Thus, other styles within your wiki's CSS, changes you made to the CSS I provided, or something else that I'm not aware of, may have caused the error.