Build consistent, themeable React apps based on constraint-based design principles. Built for white-labels, themes, and other applications where customizing colors, typography, and layout are treated as first-class citizens and based on the System UI Theme.

Add a dark-mode / night-mode to your website in a few seconds. This library uses the css mix-blend-mode in order to bring Dark-mode to any of your websites. Just copy paste the snippet and you will get a widget to turn on and off the dark-mode.

33 concepts every JavaScript developer should know.