Mobile Navigation Background Color Issue

Hello all,

I am having an issue with my mobile navigation. My site is https://nightlylight.com/. I am new to WordPress so there are some things still in progress but I am getting there. On mobile, my navigation menu is working as expected on all pages except for 2. If you look at my home page or blog page and open the navigation at the top, you will see the background for all pages is white except for the submenu. If you check any of the other pages in the navigation and open the navigation, the background is black which is what I want.

I have looked all over WordPress trying to figure out how to change this but I can't.

I would appreciate any thoughts on how to fix this.

thanks