object-fit-contain

Codice
<style>
.contenitore {
width: 300px;
height: 200px;
border: 2px solid #333;
}
img {
width: 100%;
height: 100%;
object-fit: contain;
}
</style>
</head>
<body>
<a href="#" onClick="window.history.go(-1);">Home</a>
<h2>object-fit: contain</h2>
<div class="contenitore">
<img src="leggi8.jpg" alt="Placeholder">
</div>