Custom CSS problem

Hello, I’m trying to use custom CSS and I can’t get some of the codes working.
I realized that codes that include “import” (like the following code) are not working.

@import URL(//;

And hannefrank’s rem-type CSS, which also includes “import”, seemed to be working at first, but every time I put my cursor on the rem, applied changes just go back to how they were before :woman_shrugging:

영화 및 TV 2022-09-15 오후 6_24_55 (2)

I hope someone can help me with this problem…
Thanks in advance.