<!DOCTYPE html>
<html lang="en-US">
<head>
<style>
svg rect{
stroke:red;
stroke-width:3;
fill:#339933;
}
</style>
</head>
<body>
<svg height="130" width="130">
<defs>
<filter id="point" x="0" y="0" width="200%" height="200%">
<feOffset result="offOut" in="SourceGraphic" dx="20" dy="20" />
<feColorMatrix result = "matrixOut" in = "offOut" type = "saturate" values = "1"/>
<feGaussianBlur result="blurOut" in="matrixOut" stdDeviation="10" />
<feBlend in="SourceGraphic" in2="blurOut" mode="normal" />
</filter>
</defs>
<rect width="80" height="80" filter="url(#point)" />
</svg>
</body>
</html>