Source code

Revision control

Copy as Markdown

Other Tools

Test Info:

<!DOCTYPE HTML>
<title> Ensure element is centered by auto margin for orthogonal writing mode </title>
<link rel="match" href="div-orthogonal-auto-margin-ref.html">
<style>
#outer {
inset: 0;
background-color: black;
writing-mode: vertical-rl;
margin: auto;
position: absolute;
block-size: max-content;
inline-size: 100px;
border: 5px solid red;
}
</style>
<div id="outer"><div style="block-size: 200px;"></div></div>