You're able to use the size modifier to control the size of your buttons, using one of the available sizes: sm, md, and lg.
The default size is set to md.
Here you can find a list of the various customization options you can use for the button group component as props, as well as available slots.
Button Group API
Property disabled
TypeBoolean
Acceptedtrue, false
Defaultfalse
Description Sets the state of the button group component and its child button components to disabled.
Property size
TypeString
Acceptedsm, md, lg
Defaultmd
Description Sets the size of the button group component and its child button components.
Property vertical
TypeBoolean
Acceptedtrue, false
Defaultfalse
Description Sets the direction of the button group component.
Slot default
Description Slot for button group default content.
Sass Variables
Here you can find a list of the Sass variables you can use for the button group components. If you're looking to find common variables that these rely on, you should take a look at the Sass Variables page.