.l-main {

  // make the publication date smaller than the normal paragraph size
  h1 + p {
    @extend %type-small;
  }
}

.l-main {

  // make the publication date smaller than the normal paragraph size
  h1 + p {
    @extend %type-small;
    padding-top: $baseline-unit*2;
    padding-bottom: $baseline-unit*4;
    border-top: 1px solid $color-horizontal-rule;
  }
}

Add styling to new date element
Add styling to new date element