<!DOCTYPE html>
<html>
<head>
<style>
img {
width:200px;
height:400px;
object-fit:cover;
}
</style>
</head>
<body>
<h1>object-fit 属性</h1>
<img src="/i/photo/tulip.jpg" alt="Tulip" width="300" height="300">
</body>
</html>