<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN">
<html>
<head>
<style>
.table {
background-color: purple;
color: white;
width: 100%;
}
.outer {
border: 3px solid red;
margin: 1em;
-webkit-writing-mode: vertical-rl;
}
</style>
</head>
<body>
<table class=outer>
<tr><td><table class=table><tr><td>Table One</table><table class=table><tr><td>Table Two</table></td></tr>
</table>
<table class=outer>
<tr><td><div class=table>Div One</div><div class=table>Div Two</div>
</table>