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<!DOCTYPE HTML>
<!--
Any copyright is dedicated to the Public Domain.
-->
<html><head>
<title>Reference: dynamic change .left on abs.pos. item w. align-self:center</title>
<link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1405319">
<style type="text/css">
html,body {
color:black; background-color:white; font:16px/1 monospace; padding:0; margin:0;
}
.grid {
display: inline-grid;
position: relative;
background: lightgrey;
grid: 50px 50px / 50px 50px;
}
#item {
background: grey;
position: absolute;
align-self: center;
left: 20px;
}
</style>
</head>
<body>
<div class="grid">
<div id="item">X</div>
</div>
</body>
</html>