@mixin button() {
  $button: settings($settings, "define.button.class");
  #{$button} {
    display: inline-block;
    padding: space(0.25) space(0.5);
    background-color: inherit;
    text-decoration: none;
    border-radius: value(border-radius);
    color: value(current);
    border: 2px solid currentColor;
    font-size: 1em;
  }
}