Animation of the loading HOMS. YouTube's loader behavior, in my opinion, is the etalon of interaction with user perception. It gives an accurate feeling of process. Also, YouTube is one of the most popular services at all, so their loader behavior integrates into the user experience. I have created two types of loader, splash (on a post), as a specific one with logo part and spinner for global use. Spiner, I made as pure CSS which you can customize and use for your projects in CodePen .