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<!DOCTYPE html>
<title>Basic of anchor-scroll: anchored elements should be "pinned" to the anchor when anchor is scrolled</title>
<link rel="stylesheet" href="/fonts/ahem.css">
<style>
body {
font: 20px/1 Ahem;
margin: 0;
}
#scroll-container {
width: 400px;
height: 400px;
overflow: scroll;
}
#scroll-contents {
width: 1000px;
height: 1000px;
position: relative;
}
#placefiller-above-anchor {
height: 500px;
}
#placefiller-before-anchor {
display: inline-block;
width: 500px;
}
#inner-anchored {
color: green;
position: fixed;
left: 70px;
top: 180px;
}
#outer-anchored {
color: yellow;
position: fixed;
left: 70px;
top: 220px;
}
</style>
<div id="scroll-container">
<div id="scroll-contents">
<div id="placefiller-above-anchor"></div>
<div id="placefiller-before-anchor"></div>
<span id="anchor">anchor</span>
</div>
</div>
<div id="inner-anchored">inner-anchored</div>
<div id="outer-anchored">outer-anchored</div>
<script>
const scroller = document.getElementById('scroll-container');
scroller.scrollTop = 300;
scroller.scrollLeft = 450;
</script>
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