less function for creating pseudo class stylig for a button object

pseudo-btn-states

// Button pseudo states
// -------------------------
// Easily pump out default styles, as well as :hover, :focus, :active,
// and disabled options for all buttons
.btn-pseudo-states(@color; @background; @border) {
  color: @color;
  background-color: @background;
  border-color: @border;

  &:hover,
  &:focus,
  &:active,
  &.active {
    background-color: darken(@background, 5%);
        border-color: darken(@border, 10%);
  }

  &.disabled,
  &[disabled],
  fieldset[disabled] & {
    &,
    &:hover,
    &:focus,
    &:active,
    &.active {
      background-color: @background;
          border-color: @border
    }
  }
}