blog/themes/embark/source/css/04-objects/_objects.heading.scss

.o-heading {
  max-width: 600px;
  margin: 0 auto;

  &__title {}

  &__subtitle {
    margin-top: get-spacing-stack(s);
  }

  &__footer {
    margin-top: get-spacing-stack(m);
  }
}