mozilla-release/layout/reftests/border-radius/clipping-5-refi.html

<!DOCTYPE HTML>
<title>Test for clipping of border-radius</title>
<style>
img {
  margin: 18px 19px 21px 25px;
  /* border + padding: 1px 2px 4px 8px */
  height: 100px;
  width: 200px;

  /* Horizontal: TL TR BR BL / Vertical: TL TR BR BL */
  /* border-radius: 25px 17px 14px 18px / 12px 15px 18px 17px; */
  border-radius: 17px 15px 12px 10px / 11px 14px 14px 13px;
}
</style>
<img src="../pixel-rounding/lime-25x25.png" alt="">