blog/themes/embark/source/css/06-utilities/_utilities.visibility.scss

.u-hidden {
  display: none;
}

.u-hidden-until-medium {
  display: none;

  @include breakpoint(m) {
    display: inherit;
  }
}

.u-hidden-until-large {
  display: none;

  @include breakpoint(l) {
    display: inherit;
  }
}

.u-hidden-medium-up {
  @include breakpoint(m) {
    display: none;
  }
}

.u-hidden-large-up {
  @include breakpoint(l) {
    display: none;
  }
}