Use the button classes on an <a>, <button>, or <input> element.

Use the .btn-outline-* classes to quickly create bordered buttons.

Add .btn-rounded to buttons to get large rounded corners.

Use the .btn-outline-* and .btn-rounded classes together to quickly create bordered buttons with large rounded corners.

Add icons to any button or even use Icon-only buttons.

Add .btn-lg or .btn-sm classes for additional button sizes.

Add the disabled attribute to disable buttons.

Create block level buttons, by adding add .btn-block.

Create a group of buttons by wrapping with .btn-group.