progress

A single HTML `progress` element can have quite an elaborate design with custom colors, a tooltip showing the active %, and even an entrance animation.

Josh W. Comeau: A cool thing I always forget: The <progress> tag can be put in an “indeterminate” state by omitting the value attribute. The idea is that we want to signal to the user that something is in progress, but we don’t know how far along it is. With a value: Indeterminate: