Single color buttons
Add class .btn-{color} for buttons in theme colors
Rounded buttons
Add class .btn-rounded
Outlined buttons
Add class .btn-outline-{color} for outline buttons
Inverse buttons
Add class .btn-inverse-{color} for inverse buttons
Icon Buttons
Add class .btn-icon for buttons with only icons
Button Size
Use class .btn-{size}
Block buttons
Add class .btn-block