<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
.con{300px;height:300px;
border: 1px solid black;
overflow: hidden;
}
.con img{
transition:transform 2s;
}
.con img:hover{
transform: scale(1.5)
}
</style>
</head>
<body>
<div class="con">
<img src="img/1.jpg" width="100%" height="100%">
</div>
</body>
</html>