SimenB/stylint

$btn-group-vertical = @block
  display: inline-block
  position: relative
  vertical-align: middle // match .btn alignment given font-size hack above

  > .btn
    float: left
    position: relative
    // Bring the "active" button to the front
    &:hover,
    &:focus,
    &:active,
    &.active
      z-index: 2

    &:focus
      // Remove focus outline when dropdown JS adds it after closing the menu
      outline: 0