Hey @lindsey46! Can you try adding
!important after the CSS and see if that helps? For example,
font-family: serif; would become
font-family: serif !important; instead (i.e. put the
!important just before the semi-colon).
I'd also suggest clearing your browser cache/cookies, or view it in a private window, just in case the changes are a bit delayed (sometimes it takes a few minutes to refresh the cache).