ce the AccName spec is in flux about whitespace joiners, and the implementations don't match,
      normalize the whitespace (with extra leading/trailing) space.

      No point in having the same in-flux spec change cause failures the remaining unrelated tests.

      See more here:
      https://github.com/w3c/accname/issues/205
      https://github.com/w3c/accname/projects/1#card-42288231

    */

    .simple-before::before {
      content: " before "; /* [sic] leading and trailing space */
      margin: