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.

Ire Aderinokun presents in this article her solution to resetting some default browser styles, she also includes some utilities that she wants in every project.

JS library which simulating reflections on devices that support the DeviceMotion event.