| <svg style="display: block; width: 0; height: 0"> |
| <defs> |
| <filter id="drop-shadow"> |
| <fegaussianblur in="SourceAlpha" stdDeviation="0"></fegaussianblur> |
| <feoffset dx="0" dy="10" result="offsetblur"></feoffset> |
| <feflood flood-color="rgba(0,0,0,1)"></feflood> |
| <fecomposite in2="offsetblur" operator="in"></fecomposite> |
| <femerge> |
| <femergenode></femergenode> |
| <femergenode in="SourceGraphic"></femergenode> |
| </femerge> |
| </filter> |
| </defs> |
| </svg> |
| <canvas id="canvas" width="100" height="100"></canvas> |
| <script> |
| var canvas = document.getElementById('canvas'); |
| var ctx = canvas.getContext('2d'); |
| ctx.filter = 'url(#drop-shadow)'; |
| ctx.fillStyle = '#0f0'; |
| ctx.fillRect(25, 25, 50, 40); |
| </script> |