<html>
<head>
<style>
div {
  width:100px;
  height:100px;
}
</style>
</head>
<body style="margin:0px">
<div style="overflow:hidden; background-color:red; height:0px">
<div style="position:absolute; background-color:red">
<div style="overflow:hidden; background-color:green">
</div>
</div>
</div>
</body>
</html>