Slides

Do you mean on the front page? They look okay on Firefox, Safari and Chrome.
But you do have some mark-up errors on that pages, so you might check on those:

https://validator.w3.org/check?uri=http%3A%2F%2Fnewsite.isohimpact.org%2F&charset=%28detect+automatically%29&doctype=Inline&group=0

I had forgotten that I’d made the slides “transparent”. I fixed that issue & all is well now! Thanx for the quick response! I wasn’t able to open your link. What do you mean by “mark-up errors”?

I do have another question. Is there a way to change the background of the Main Menu from white to black?

Glad you got the slider issue sorted out. For customizations, I can help you out on our support forums.

https://support.siteorigin.com/