@mixin callout-variation($color) {
  border-left-color: $color;
  background-color: $color-bg-lightest;

  h3,
  h4,
  h5,
  h6,
  a {
    color: $color;
  }

  h3,
  h4,
  h5,
  h6 {
    text-transform: uppercase;
  }

  > *:last-child {
    margin-bottom: 0;
  }
}