metamask-extension/ui/pages/confirm-transaction-base/transaction-alerts/transaction-alerts.scss

.transaction-alerts {
  text-align: left;

  & > *:first-of-type {
    margin-top: 20px;
  }

  & > *:not(:first-of-type) {
    margin-top: 12px;
  }

  & strong {
    font-weight: bold;
  }

  &__pending-transactions {
    & a {
      color: var(--primary-1);
    }
  }
}