Issue with CSS Blend Mode

Hey! I’m trying to make the words, logo, and hamburger in my sticky navbar have the blend mode ‘exclusion’, but I can’t do it without also applying the blend to the menu that opens when I hit the hamburger. I’ve tried applying the blending to just the div blocks holding the logo, words, and menu; but it doesn’t work. The blending only works when I apply it to the entire sticky nav class.

Thank you! I’m sure the reason I can’t apply blending to the specific div blocks with the logo, words, and menu is simple, I’m just inexperienced and mostly work with templates.