<!doctype html>
<html lang="en">

	<meta charset="utf-8">
	<title>basicScroll Demo</title>

	<meta name="viewport" content="width=device-width, initial-scale=1">

	<style>

		html {
			width: 100%;
			height: 100%;
			font-family: sans-serif;
		}

		body {
			height: 400vh;
			margin: 0;
		}

		.container {
			display: flex;
			justify-content: center;
			align-items: center;
			width: 100%;
		}

		.container:nth-child(1) { height: 200vh; }
		.container:nth-child(2) { height: 0; }
		.container:nth-child(3) 