Use the border spinners for a lightweight loading indicator.
If you don’t fancy a border spinner, switch to the grow spinner. While it doesn’t technically spin, it does repeatedly grow!
Add .spinner-border-sm and .spinner-grow-sm to make a smaller spinner that can quickly be used within other components.
Use spinners within buttons to indicate an action is currently processing or taking place.
Use flexbox, float or text alignment utilities to place spinners exactly where you need them in any situation.