Having trouble with Explorer verses Firefox

I was wondering if anyone is able to help me?

I recently changed over to awordpress blog running from my domain.

I edited it in Firefox and have it all working fine there through Firefox but when I load my blog into Explorer for some reason all the menus are missing and the white at the top is coming through when it doesn’t do that in Firefox. I have had friends go onto the blog and having the same issue.

Is there any way of fixing this?

The blog address is here: https://sweetchilliphillyphotography.com/blog/

Thanks in advance

Philly