This quick tutorial will walk you through a few ways on how to lock the screen orientation using CSS and Javascript.
0:00 Introduction
0:44 Method 1 - Screen Orientation API
3:41 Method 2 - CSS Rotate
4:26 Method 3 - Rotate Message
5:20 Closing
-- FREE SOURCE CODE DOWNLOAD & MORE --
https://code-boxx.com/lock-screen-orientation/
1.65 GEEK