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<!DOCTYPE html>
<html>
<head>
<style>
#container {
display: inline-block;
width: 200px;
height: 100px;
border: solid black 1px;
overflow-x: hidden;
overflow-y: hidden;
scroll-snap-type: y mandatory;
}
#container-zoomed {
display: inline-block;
width: 400px;
height: 200px;
border: solid black 2px;
overflow-x: hidden;
overflow-y: hidden;
scroll-snap-type: y mandatory;
}
.buffer {
scroll-snap-align: start;
background-color: lightblue;
height: 1000px;
width: 200px;
}
.buffer-zoomed {
scroll-snap-align: start;
background-color: lightblue;
height: 2000px;
width: 400px;
}
.target {
scroll-snap-align: start;
background-color: black;
height: 20px;
width: 200px;
}
.target-zoomed {
scroll-snap-align: start;
background-color: black;
height: 40px;
width: 400px;
}
</style>
</head>
<body>
<div id="container" style="scroll-padding-top: 20px;">
<div class="buffer"></div>
<div class="target" id="target1"></div>
<div class="buffer"></div>
</div>
<div id="container" style="scroll-padding-top: 20px;">
<div class="buffer"></div>
<div class="target" id="target3"></div>
<div class="buffer"></div>
</div>
<div id="container-zoomed" style="scroll-padding-top: 40px;">
<div class="buffer-zoomed"></div>
<div class="target-zoomed" id="target2"></div>
<div class="buffer-zoomed"></div>
</div>
<div id="container-zoomed" style="scroll-padding-top: 40px;">
<div class="buffer-zoomed"></div>
<div class="target-zoomed" id="target4"></div>
<div class="buffer-zoomed"></div>
</div>
<script>
for (match of document.querySelectorAll(".target, .target-zoomed")) {
match.scrollIntoView();
}
</script>
</body>
</html>