I have asked this question before but the answer did not hold up.
I have a menu on the left side of my website that has a fixed position. So, no matter how far I scroll up or down the page, the menu is always in the same place on the left side of page. However, If I change the size of my screen and scroll horizontally, it will begin to overlap the content of the page. it slides under the other content.
Is there a way to keep a div fixed vertically but not fixed horizontally so it can move with the entire page as you scroll right and left?