<style>
* {
  max-height: 0mm;
}
:not(script) {
  columns: 0px;
  border-right-style: dashed;
}
</style>
<script>
function go() {
  a.replaceWith(b);
}
</script>
<body onload=go()>
<data>
<video></video>
<br></br>
<span>
<ol>
<li id="a"></li>
<form id="b">