5.5.Changed editor background to white but I have white text, can’t see

I use white text, turquoise background, in my theme, but changed with complicated custom CSS so that my posts are displayed with black text and a white background. The editor is more complicated, some tech support person tried to fix something else and after that, instead of the custom black-white combo, the EDITOR not the post changed back to the white/light blue combo. I can live with that. But with the 5.5. update, the background in the editor (not the actual posts visible to people) changed to white… on white text. I tried to edit the CSS style and add some custom CSS but nothing has fixed this. I literally can’t see the text when I am editing. The actual POSTS are fine and I don’t want to change anything about how they display to readers, it’s just my editor colors for posts that I need to fix… This is for my site realcontextnews.com

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