<!DOCTYPE html>
<html style="font-size: 16px">
<head>

<meta name="viewport" content="width=800">
<style>
  body {
    width: 800px;
    margin: 0;
    overflow-y: hidden;
    overflow-x: hidden;
  }
</style>

</head>
<body>

<div style="font-size: 2.5rem">
The below list item markers should be autosized by a factor of 2.5 (800/320). The whole list is shifted to the right by 8px (14 (autosized marker width) * (1 - 1/2.5) rounded) to compensate the scaling of list item markers and make sure they don't get chopped off.
</div>
<ul>
<li style="font-size: 2.5rem">Simple plain list item</li>
<li style="font-size: 2.5rem"></li>
<li style="font-size: 2.5rem"><img></img></li>
<li style="font-size: 2.5rem"><form><input type="text"></input></form></li>
</ul>

</body>
</html>