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

.signature-request-data {
  &__node {
    &__value {
      white-space: pre-line;
      overflow: hidden;
      word-wrap: break-word;

      &__address {
        [dir='rtl'] & {
          /*rtl:ignore*/
          direction: ltr;

          /*rtl:ignore*/
          text-align: right;

          span {
            display: block;

            /*rtl:ignore*/
            direction: rtl;
          }
        }
      }
    }
  }
}