This is a great snippet if you want to show the hamburger menu on the top left of the screen and on click you want that to expand and fill out the entire screen and show you the navigation menu options in the top left of the screen. Designed by Victor Belozyorov
If you are having trouble with the pen, try the archived copy on GitHub
See the Pen Burger menu transformation by Victor Belozyorov (@WispProxy) on CodePen.0