Use a classes btn btn-defaultto quickly create a general btn.

Use a classes btn btn-roundedto quickly create a rounded btn.

Use a class btn btn-outlineto quickly create a outline btn.

Use a classes btn btn-outline btn-roundedto quickly create a outline rounded btn.

Use a class btn-lgfor large button, btn-smfor small button, btn-xsfor mini button.

Use a class disabledto quickly create a disabled btn.

Just add icon in i tagand text in span tag.

Use a class btn-blockto quickly create a block btn.

Just add icon in i tagand add dropupclass for dropup.

Just add icon in i tagand text in span tag.

Just add icon in i tagand text in span tag.

Just add class btn-squarefor square button and for sizes add btn-lgand btn-smclasses.

Just add class btn-circlefor circle button and for sizes add btn-lgand btn-smclasses.

Just add class btn-squareand respective social icon classfor square button and for sizes add btn-lgand btn-smclasses.

Just add class btn-circleand respective social icon classfor circle button and for sizes add btn-lgand btn-smclasses.

Just add class fancy-button btn-0for button animation.

Just add class btn-group btn-group-verticalfor vertical group button.