| <!DOCTYPE html> | |
| <style> | |
| .box { | |
| width: 200px; | |
| height: 200px; | |
| margin: 20px; | |
| background-image: radial-gradient(transparent, black); | |
| filter: url(#lighting); | |
| } | |
| </style> | |
| <div class="box"></div> | |
| <svg width="0" height="0"> | |
| <filter id="lighting" x="-0.5" y="-0.5" width="2" height="2"> | |
| <feDiffuseLighting surfaceScale="200"> | |
| <feDistantLight azimuth="135"/> | |
| </feDiffuseLighting> | |
| <feComposite operator="in" x="50" y="50" width="100" height="100" in2="SourceGraphic"/> | |
| </filter> | |
| </svg> |