Use Bootstrap buttons and Bootstrap custom styles for actions in forms, dialogues, and more with support for multiple sizes, states, and more.
Bootstrap provides different styles of buttons:
Bootstrap includes several predefined button styles, each serving its own semantic purpose, with a few extras thrown in for more control.
In need of a button, but not the hefty background colors they bring? Replace the default modifier classes with the .btn-outline-* ones to remove all background images and colors on any button.
Fancy larger or smaller buttons? Add .btn-lg or .btn-sm for additional sizes.
Create block level buttons—those that span the full width of a parent—by adding .btn-block.
Buttons will appear pressed (with a darker background, darker border, and inset shadow) when active. There’s no need to add a class to <button>s as they use a pseudo-class. However, you can still force the same active appearance with .active (and include the aria-pressed="true" attribute) should you need to replicate the state programmatically.