Thanks for trying. I hate these websites that show very wide lines of text that do not reflow. They think they are the only website in the world. I might want to look at another window side by side.
Didn't work for me on Amazon, for the Editorial Reviews section. Shift-Option-X did nothing, A broke the page with lots of overlapping text and images.
I'm on Macos, so I used Shift-Option-X and A since there is no Alt key.

Why aren't more people using this add-on? This is amazing!

This is excellent! I hate those trendy containers! Thank you :-)