<!DOCTYPE html>
<html lang="pt-BR">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<style>
html,body{
margin:0;
width:100%;
height:100%;
background:#000;
}
img{
width:100%;
height:100%;
object-fit:cover;
}
</style>
</head>
<body>
<img src="foto.jpg">
</body>
</html>