SVG Filters
<!DOCTYPE html> <html> <body> <svg width="160" height="120" viewBox="0 0 160 120" xmlns="http://www.w3.org/2000/svg"> <defs> <filter id="softBlur"> <feGaussianBlur stdDeviation="4" /> </filter> </defs> <rect x="30" y="30" width="100" height="60" fill="steelblue" filter="url(#softBlur)" /> </svg> </body> </html>