<!--
@BLINK-ALLOW:details*
@AURALINUX-ALLOW:details*
@WIN-ALLOW:details*
-->
<html>
<head><style>
button {
anchor-name: --anchor-el;
margin: 60dvh;
}
div {
position: absolute;
position-anchor: --anchor-el;
bottom: anchor(top);
right: anchor(right);
background: skyblue;
}
</style></head>
<body>
<div>target</div>
<button>anchor</button>
</body>
</html>