class : btn btn-primary btn-sm
class : btn btn-primary
class : btn btn-primary btn-lg
class : btn btn-secondary btn-sm
class : btn btn-secondary
class : btn btn-secondary btn-lg
class : btn btn-success btn-sm
class : btn btn-success
class : btn btn-secondary btn-success
class : btn btn-info btn-sm
class : btn btn-info
class : btn btn-info btn-lg
class : btn btn-danger btn-sm
class : btn btn-danger
class : btn btn-danger btn-lg