Hm. I used both of those, and it didn't really change anything. It's not transparent, it's the block/square things.
This is what happened when I used babystrits's method -
And, when I used Wolf Fandom's method, it didn't change anything.
And yes, after I added the coding Wolf Fandom suggested, I saved it, and I went back and saved it multiple times.
So, how would I remove the square/blocky stuff?