Your response is a solution. In an effort to make sure my students were understanding tags I had them build a page using google docs. Even though you will not have the preview feature that web lab offers you will be able to copy your finished code into the workspace area between the body tags. That worked really well for me.
With regards to the project, You could have each student be responsible for making a separate page that supports the Websites purpose for good. Then they would share their page’s link and be responsible for linking them together to make one site.
Another approach is to encourage students to develop and assign roles requiring different students to be responsible for different tasks or parts for completing the site. Of course, they will need to develop the prototype on paper to clearly define who will do what. Task can range from someone to collect data, research, find the best videos, work on the CSS, Work on the HML, finding graphics (with attributions), project management based on time schedule, etc… hope this helps
HTML pop quiz in Google Docs)