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<!DOCTYPE html>
<meta name="viewport" content="width=device-width">
<style>
html, body {
margin: 0;
scrollbar-width: none;
}
.spacer {
height: 100vh;
background-color: green;
}
.sticky_bottom {
position: relative;
top: calc(-50px - 20px + 10px - 50px);
height: 50px;
background-color: blue;
opacity: 50%;
}
.sticky_both {
position: relative;
top: calc(-100px - 20px + 10px - 50px);
height: 50px;
background-color: purple;
opacity: 50%;
}
.sticky_top {
height: 50px;
background-color: red;
opacity: 50%;
}
</style>
<div class="spacer"></div>
<div class="sticky_bottom"></div>
<div class="sticky_both"></div>
<div class="sticky_top"></div>
<div class="spacer"></div>
<script>
document.scrollingElement.scrollTop = 10;
</script>
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