Okay, I’m having this issue again, and I don’t know why!
I moved the site over from my staging site to my actual site, and now that I’ve written a longish blog post, the sidebar is yet again transparent. I check the CSS section, and the bit that you told me to add is there, so I’m not sure why it’s doing this.
URL: https://www.pikkoshouse.com/2019/01/01/pikkos-house-3-0/
Thank you, and Happy New Year!