Wexley template: how to make dropdown navigation menu un-transparent?

I have a lot of navigation folders, and I want to make them un-transparent so that they can be read when they drop down over images and text on the page.

@jj_artist no one can help without screenshot & site url.

Thanks @tuanphan , I'm new to this. URL: https://www.judithjosephstudio.com/

@jj_artist Add to Home > Design > Custom CSS

#topNav nav .folder .subnav {
   background: white !important;
}

5 minutes

Tuan Phan

Squarespace Developer