@mixin wrapper() {
  max-width: $contentWidth;
  margin: 0 auto;
  padding: 0 6rem;
  @media (max-width: $MQNarrow) {
    padding: 0 3rem;
  }
  @media (max-width: $MQMobileNarrow) {
    padding: 0 1.6rem 1.6rem;
  }
}