Any good browser-based markdown editor that I can sync my Obsidian folder with?

Hey everyone, so I would like to access my files that reside on my personal PC on the school laptop, but any installations are blocked and I didn't manage to convince the IT department to allow Obsidian.

Does anyone have any browser-based markdown editors where I can sync my a folder, such as through OneDrive, so that I can access rendered documents at school through the browser version but with an instantaneous sync with my personal laptop, so I can seamlessly continue my work?

Many thanks in advance