   /* "none" should resolve to zero when we only have one single stop. */
    background: linear-gradient(to right in srgb, color(srgb none 0.5 0.5));
  }

  #multipleNone {
    /* "none" and "none" gives zero. */
    background: linear-gradient(to right in srgb, color(srgb none 0 none));
  }

  #allNone {
    /* "none" and "none" gives zero. */
    background: linear-gradient(to right in srgb, color(srgb none none none));
  }

  #noneHue {
    background: linear-gradient(to right in oklch, oklch(0.8 0.4 no