@define-mixin heading $el {
  $(el) {
    font-size: var(--font-$(el)-size);
    font-weight: bold;
    font-variant: small-caps;
    padding: var(--padding-small) 0;
    margin-top: 0;
    border-bottom: 1px solid var(--primary-border-color);
  }
}

@define-mixin heading-type $type {
  .heading--$(type) {
    border-bottom-color: var(--$(type)-border-color);
  }

  .block--$(type) {
    h1, h2, h3, h4, h5, h6 {
      border-bottom-color: var(--$(type)-border-color);
    }
  }
}

@mixin heading h1;
@mixin heading h2;
@mixin heading h3;
@mixin heading h4;
@mixin heading h5;
@mixin heading h6;

/* To differentiate between h5 and h6, simply make h6 not bold */
h6 {
  font-weight: normal;
}

@mixin heading-type success;
@mixin heading-type warning;
@mixin heading-type danger;
@mixin heading-type information;
@mixin heading-type special;