Part of establishing an effective workflow involves eliminating repetitive activities. A lot of projects/assignments/files have common properties. So you shouldn't find yourself typing the same things, making the same files and subfolders over and over again.
On the right, we have a .zip archive, including a template HTML page and subfolders with placeholder content, to use in future assignments. Included with the template is a starter CSS file named style.css that has a couple of CSS rules that are common to all (most, at least) of your projects in this class