The Multi-Page Websites stage was one I was really looking forward to, where my students would be able to bring their different pages together, however, it ended up not working out as well as I'd planned.
On this stage they need to create 3 html files, 4 css files and then copy code from stage 4 and 5 to put in the html files and css files. This was very confusing for my students. They kept wanting to leave the second tab open from where they were copying, which resulted in the pasted code on the first tab not saving and loosing their work (the environment doesn't know what to do with two tabs open of the same files so it doesn't save)
So be sure to remind the students to only have 1 tab open at a time (open the second tab to quickly copy the code and then immediately close the second tab before pasting)