<!DOCTYPE html>
<!--
     Any copyright is dedicated to the Public Domain.
     http://creativecommons.org/publicdomain/zero/1.0/
-->
<html class="reftest-paged">
<head>
<style>
@page {
  size: 5in 3in;
  margin: 0.5in;
}
@font-face {
  font-family: Ahem;
  src: url(../fonts/Ahem.ttf);
}

html,body {
  color:black; background-color:white; font:20px/1 Ahem; padding:0; margin:0;
  writing-mode: vertical-lr;
}
html { block-size: 40vw; }

.ib {
  display: block;
  inline-size: 50vh;
  block-size: 210vw;
  border: 5px solid black;
  border-block-start-color: blue;
  border-inline-start-color: lime;
  margin-inline-start: 20px;
  margin-block-end: -20px;
}
</style>
</head>
<body>
  <div class="ib"></div>
  X<span style="display:inline-block; inline-size:50vh; border:5px solid transparent"></span>p
</body>
</html>