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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<style>
@font-face {
font-family: dejavu;
src: url(../fonts/DejaVuSansMono.woff);
}
.test {
margin: 10px;
border: 1px solid gray;
font: 16px/24px dejavu;
word-break: break-all;
width: 10em;
height: 6.5em;
/* we use text-orientation:upright to improve the chances that our
glyphs will have an advance of exactly 1em, as the reference
rendering relies on this */
text-orientation: upright;
color: rgba(0,0,255,0.2);
}
.v-lr { writing-mode:vertical-lr; }
.v-rl { writing-mode:vertical-rl; }
.c { background: cyan; }
.b { background: blue; }
</style>
</head>
<body>
<div class="test v-lr">ABCD<span class="c">E</span><span class="b">F</span><span
class="c">G</span><span class="b">H</span><span class="c">I</span><span
class="b">J</span><span class="c">K</span><span class="b">L</span><span
class="c">M</span><span class="b">N</span><span class="c">O</span><span
class="b">P</span><span class="c">Q</span><span class="b">R</span><span
class="c">S</span><span class="b">T</span><span class="c">U</span>VWXYZ</div>
<div class="test v-rl">ABCD<span class="c">E</span><span class="b">F</span><span
class="c">G</span><span class="b">H</span><span class="c">I</span><span
class="b">J</span><span class="c">K</span><span class="b">L</span><span
class="c">M</span><span class="b">N</span><span class="c">O</span><span
class="b">P</span><span class="c">Q</span><span class="b">R</span><span
class="c">S</span><span class="b">T</span><span class="c">U</span>VWXYZ</div>
</body>
</html>