metamask-extension/ui/components/app/modals/transaction-confirmed/index.scss

.transaction-confirmed {
  &__title {
    @include H3;

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

  &__description {
    @include H6;

    text-align: center;
  }

  &__content {
    overflow-y: auto;
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 16px;
  }
}