How to get an Internet browser out of and into fullscreen
With Internet browsers, whether it be Internet Explorer, Firefox, Google Chrome, or Safari, a fullscreen mode allows the web page to fill the entire screen. The address bar, menu bar, bookmarks, and status bar are hidden from view when in fullscreen mode.
Fullscreen mode on a Windows computer
To exit the standard view with the address bar, status bar, etc., always showing, press the F11 key on your keyboard to enter fullscreen. Pressing the F11 key again allows you to go back to normal view.
If pressing F11 does not have any effect, you may need to press the Fn key, and while holding it down, press F11.
In Internet Explorer and Firefox fullscreen view, the address bar is hidden from view. However, moving the mouse pointer to the top of the screen causes the address bar to appear. If you press the F11 key again, it switches to normal mode and keeps the address bar always visible and never hidden.
Fullscreen mode on a Mac computer
In full-screen mode on a Mac, the browser's address bar and toolbars are still displayed.
Fullscreen mode on a Google Chromebook
The Google Chromebook does not have function keys. However, it does have keys on the top row that perform functions, including making the screen full screen. Press the fullscreen button. It has a box with an arrow in the top-left and bottom-right corners, as shown in the picture.