metamask-extension/ui/components/app/modal/modal-content/index.scss

.modal-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 16px 0;

  &__title {
    @include H3;

    font-weight: 500;
    padding: 16px 0;
    text-align: center;
  }

  &__description {
    @include H6;

    text-align: center;
  }
}