<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>scroll</title>
<style>
main{
width: 100vw;
height: 100vh;
display: grid;
place-items: center;
}
ul{
scroll-snap-type: y mandatory;
}
li{
scroll-snap-align: start;
width: 100px;
height: 500px;
list-style: none;
}
</style>
</head>
<body>
<main>
<ul>
<li style="background-color: red;">1</li>
<li style="background-color: rgb(78, 48, 94);">2</li>
<li style="background-color: rgb(61, 37, 142);">3</li>
<li style="background-color: rgb(33, 175, 63);">4</li>
</ul>
</main>
</body>
</html>
