Animations in ReactJS. This library makes it easy to start animations. Complex animations are also possible. There are many setting options, e.g. the duration and the transformation animations are all supported.

With skeletons you can make the user believe that everything is already loaded, even though everything has yet to finish loading in the background. This allows the homepage to appear faster. Large companies like Youtube use this method in their web application.

This is a quick and easy way to display code snippets. Can often be seen in the blog when code is displayed