<!DOCTYPE html>
<html>
<head>
<title>Title of the document</title>
</head>
<body>
<svg height="200" width="200">
<defs>
<filter id="filter" x="0" y="0" width="150%" height="150%">
<feOffset result="offOut" in="SourceGraphic" dx="25" dy="25" />
<feColorMatrix result="matrixOut" in="offOut" type="matrix"
values="0.2 0 0 0 0 0 0.2 0 0 0 0 0 0.2 0 0 0 0 0 1 0" />
<feGaussianBlur result="blurOut" in="matrixOut" stdDeviation="9" />
<feBlend in="SourceGraphic" in2="blurOut" mode="normal" />
</filter>
</defs>
<rect width="150" height="150" stroke="purple" stroke-width="5" fill="lightblue"
filter="url(#filter)" />
Sorry, your browser doesn't support inline SVG.
</svg>
</body>
</html>