<html><head>
<title></title>
<style>
.holder {
margin:3em;
display:inline-block;
}
.holder img {
-moz-transition: all 0.3s;
-webkit-transition: all 0.3s;
transition: all 0.3s;
}
.holder:hover img {
-moz-transform: scale(1.5);
-webkit-transform: scale(1.5);
transform: scale(1.5);
}
</style
<body>
<div class="holder">
<img src="https://pixabay.com/static/uploads/photo/2015/12/03/10/43/cat-1074657_960_720.jpg">
</div>
</body>
</html>