sass-site/source/assets/stylesheets/regions/_content.scss

.content {
  @extend .row;
  @include transition-property(padding, text-align);

  @include at-breakpoint($tablet-large) {
    @include padding-trailer;
    text-align: left;

    h2,
    h3 {
      text-align: center;

      .do-columns & { text-align: left; }
    }
  }
}