Crear cuenta
<div class="contenido">
<img class="escalera" src="./resources/image/IMG_6824.jpg" alt="">
</div>
.contenido{
background-color: white;
width: 50%;
padding: 40px; margin: 100px auto;}<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<style>
.contenido{
background-color: white;
width: 50%;
padding: 40px; margin: 100px auto; }</style>
</head>
<body>
<div class="contenido">
<img class="escalera" src="./resources/image/IMG_6824.jpg" alt="">
</div>
<body>
</html>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<style>
.escalera {
position: absolute;top: 0;left: 0;right: 0;bottom: 0;margin: auto;padding: 40px;max-width: 80%;
max-height: 80%;
background-color: white;
}</style>
</head>
<body>
<div class="contenido">
<img class="escalera" src="./resources/image/IMG_6824.jpg" alt="">
</div>
<body>
</html>