Organizing and reorganizing files into folders on the web version

I have just switched over to the web version and am now saving my files to the Web. However, when I created folders for the files that I create, I was unable to load the files into the folders. Now, I can’t seem to find a way to organize the files into folders.
Thanks for any help that you can provide.

Dow

If you check the box next to a file, then click the three dots icon in the upper right of the page, there is a Move to… option. Using that lets you choose a folder to move the file to.

I also found that drag and drop works. Drag a file in the list onto a folder in the list, and the file is moved there.