Use Bootstrap’s custom button styles for actions in forms, dialogs, and more with support for multiple sizes, states, and more.
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use .disabled
in class .btn
class to get Disabled button
use .btn-lg
in class .btn
class to get Large button
use .btn-sm
in class .btn
class to get Small button
use .btn-group-lg
in class .btn-group
class to get Large size button group
this is default size
use .btn-group-sm
in class .btn-group
class to get Small size button group