Untitled

<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0, viewport-fit=cover">
	<title>Document</title>
	<style>
		footer{
		  position: fixed;
		  left: 0;
		  bottom: 0;
		  width: 100%;
		  height: 80px;
		  background-color: blue;
		  margin-bottom: env(safe-area-inset-bottom);
		}
		.stretch{
		  height: 2000px;
		}
	</style>
</head>
<body>
	<div class="stretch"></div>
	<footer></footer>
</body>
</html>