This is a demo.
Click the menu icon to open the menu.

The links in the menu link to a section on the same page, some small javascript makes the page scroll smoothly.

This is the first section.
Notice how the fixed header and footer slide out along with the page.

Open the menu.

This is the second section.
You can also drag the page to the right to open the menu.

Open the menu.

This is the third section.
Open the menu.