This is a full website demo for light-dark mode.
There is also a simple light-dark mode with sass demo
CODE SEPARATE:
HTML
The toggle is at the right corner with a fixed position.
Four sections with smooth scrolling.
Home: title and a button
About:three toggle images and title
Menu:icons and a menu ,just for demo
Contact: icon and form
CSS
Set the two-mode color sets.
toggle-button is a checkbox.
