What does the "RBRACE expected line 91, col. 1"

https://www.codecademy.com/en/courses/web-ext/projects/html-css-prj_innovation-cloud?link_content_target=interstitial_project this is my code and i don’t how to fix this error message

An RBRACE is } which must be missing from somewhere. We cannot see your code unless you post it.

Don’t know if you resolved the problem, but I received that message because I was missing a semi-colon.