Hi, and happy to help out!
I'm not sure why your submission isn't passing, as I need some more information.
- post all the html/css, editable and non-editable, you were trying to submit;
format (i.e., escape) it so it's viewable; and
- if applicable also post a screenshot of your full browser showing the html/css not passing the submission checks.
We can then start by trying to reproduce and can help you out further!