metamask-extension/ui/components/app/signature-request-original/signature-request-original-warning/index.scss

.signature-request-warning {
  &__content {
    &__header {
      border-bottom: 1px solid var(--color-border-muted);

      &__warning-icon {
        padding-top: 7px;
        margin-right: 10px;
        color: var(--color-error-default);
      }
    }

    &__account {
      border-bottom: 1px solid var(--color-border-muted);
    }

    &__bold {
      color: var(--color-text-default);
    }
  }

  &__footer {
    border-top: 1px solid var(--color-border-muted);
    width: 100%;
    height: 132px;
  }
}