<!DOCTYPE html>
<html>
<head>
<title>Title of the document</title>
<style>
.shadow {
-webkit-filter: drop-shadow( 4px 4px 3px rgba(0, 0, 0, .7));
filter: drop-shadow( 4px 4px 3px rgba(0, 0, 0, .7));
}
</style>
</head>
<body>
<svg class="shadow">
<rect x="10" y="10" width="200" height="100" fill="lightgreen" />
</svg>
</body>
</html>