Хан,
<!DOCTYPE html>
<html>
<head>
<title>Untitled</title>
<meta charset="utf-8">
<style type="text/css">
.img img { display: block; margin: 0 ;
transition: all 3s ease-in-out;
width: 100px;
height: 100px;
}
.big{
transform: scale(7);
padding: 10% 48%;
}
.img {
overflow: hidden;
}
.img img.b{
margin: 0 25%;
width: 700px;
height: 700px;
}
</style>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<script>
$(function() {
$(".img img").on("click", function() {
$(this).toggleClass("b")
})
});
</script>
</head>
<body>
<p class="img">
<img src="http://www.newyork.ru/ic/images.newsru.com/pict/id/large/796764_20051013122324.gif" alt="" />
</p>
</body>
</html>