Art Gallery landing page and location page. CSS Grid and Flex

I think I did ok on this. One thing I noticed is that after I deployed, the location page address section did not fit directly under the map. It works fine when I inspect it in google chrome, but not on my iphone. I overcame this by setting the z-index to 1 for the address section, but all this does is put that section over the map. Not sure why it does this, and any feedback would be greatly appreciated.