HELP!!! tried to change cart background and this happened...

Not sure how it happened, but I added a line of code to change the background of the checkout to white so it wouldn’t be transparent. I tried and then deleted the code in multiple spots but none of them worked. I don’t remember which spot I did last, but it caused this to happen. How can I fix this an get rid of the big white checkmark that is permanently showing on every page of my website???

Do you mean the cart , Merchants on a regular plan cannot modify the checkout through code.

Being ambiguous with parts of the process just creates more problems.

Restore a theme duplicate or backup if you bothered to make one.

Or try rolling back the specific file

https://help.shopify.com/en/manual/online-store/themes/theme-structure/extend/edit-theme-code#roll-back

Otherwise install a new copy of the theme and try to copy over the relevant file(s) , or start over.

If you need this debugged and fixed then contact me by my email for services.
Contact info in forum signature.
ALWAYS please provide context, examples: store url, theme name, post url(s) , or any further detail in ALL correspondence.

Good Luck.