index.html is the default site for your webpage.
This file is marked with a star after its name, so that it is easily recognisable.
index.html can be created in four different ways.
1. Starting with a blank page.
2. Starting with a template
3. Deleting your current index.html file and creating a new file. This will automatically create you a new index.html file.
4. Renaming a file to index.html