Had the same problem right now, it was encountered earlier in the forum.
Step 7: Did you nest and apply the properties to .icon?
It was solved only as a result of combination of two operations (both of them were recommended here in the forum, but separately):
- I deleted all records nested in .icon and only there after I inserted here variables for width and height;
- I've removed first variable for background at all.
And also I would note that no one my comment inside the course was replied.
I think Codecademy didn't interested to solve their bags at all. But why?