Press F11 to toggle the browser's full-screen mode. Mac: Use Cmd + Ctrl + F to enter or exit full-screen mode.
Press the Fullscreen key (the 4th button in the top row, next to the refresh key) to hide the shelf and tabs. How to Access 1v1.LOL at Work (Unblocked) 1v1lol work fullscreen
The fastest way to toggle fullscreen on most systems is using universal keyboard shortcuts: Press F11 to toggle the browser's full-screen mode
Alt + Enter often forces games into full-screen mode if they are stuck in a windowed state. 1v1lol work fullscreen