Provides custom text and background color for buttons.Here you need setting bg_color , bg_hover_color , txt_color , txt_hover_color params value , other type don’t need.
btn-primary
Provides extra visual weight and identifies the primary action in a set of buttons
btn-info
Used as an alternative to the default styles
btn-success
Indicates a successful or positive action
btn-warning
Indicates caution should be taken with this action
btn-danger
Indicates a dangerous or potentially negative action
btn-inverse
Alternate dark gray button, not tied to a semantic action or use
btn-link
Deemphasize a button by making it look like a link while maintaining button behavior
