<!DOCTYPE html>
<script>
  var value = "" + Math.random();
  document.cookie = `dc_samesite_strict=${value}; secure; sameSite=strict; path=/`;
  document.cookie = `dc_samesite_lax=${value}; secure; sameSite=lax; path=/`;
  document.cookie = `dc_samesite_none=${value}; secure; sameSite=none; path=/`;
  parent.postMessage({value}, "*");
</script>
