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<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<title></title>
<style type="text/css">
body,html { color:black; background:white; font-size:12px; padding:0; margin:0; }
.grid1, .grid2 {
block-size: 60px;
border: 2px solid green;
position: relative;
}
.grid2 {
border-width: 20px;
}
span {
position: absolute;
background: lime;
border: 1px solid black;
box-sizing: border-box;
}
.a {
inset-inline-start: 40px;
inset-block-start: 0px;
inline-size: 60px;
block-size: 40px;
}
.b {
inset-inline-start: 20px;
inset-block-start: 40px;
inline-size: 60px;
block-size: 20px;
}
.c {
inset-inline-start: 80px;
inset-block-start: 40px;
inline-size: 60px;
block-size: 20px;
}
.d {
inset-inline-start: 0px;
inset-block-start: 0px;
inline-size: 20px;
block-size: 60px;
}
</style>
</head>
<body dir=rtl>
<div class=grid1>
<span class="a">a</span>
<span class="b">b</span>
<span class="c">c</span>
<span class="d">d</span>
</div>
<div class=grid2>
<span class="a">a</span>
<span class="b">b</span>
<span class="c">c</span>
<span class="d">d</span>
</div>
</body>
</html>