A family of Microsoft word processing software products for creating web, email, and print documents.
Dear tmpham,
Good day! Thank you for posting to Microsoft Community. We are happy to help you.
As per your description, please let us cooperate and please don’t worry, we can work together to narrow down and resolve the situation.
It seems only Word online open dark mode in a browser. Please try to click on View tab> and unselect the "Dark mode" to check the outcomes.
Result:
Your understanding and patience will be highly appreciated. I hope that you are keeping safe and well!
Sincerely,
Waqas Muhammad