<!doctype html>
<meta charset="utf-8">
<title></title>
<link rel="match" href="width-ref.html">
<hr>
<hr width='50%'>
<hr width='100'>
<hr width='100foo'>
<hr width='  100    '>
<hr width='100.99'>
<hr width='0'>
<hr width='00'>
<hr width='+0'>
<hr width='+00'>
<hr width='++0'>