Use Bootstrap’s custom button styles for actions in forms, dialogs, and more with support for multiple sizes, states, and more.
Use the .btn .btn-{color} classes.
Use a class .rounded-pill with .btn class to create round button.
.btn-outlineUse the .btn .btn-outline-{color} classes.
Use the .btn-lg or .btn-sm classes.
Use the .disabled or .btn-progress classes.
Use the .icon and .icon-left classes.
Use the .icon class.
Sizes.