| <svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" > |
| <defs> |
| <linearGradient id="gradient" x1="0%" y1="0%" x2="100%" y2="0%"> |
| <stop offset="0%" stop-color="red"/> |
| <stop offset="100%" stop-color="blue"/> |
| </linearGradient> |
| <filter id="shadow" width="200%" height="200%"> |
| <feOffset result="offOut" in="SourceAlpha" dx="75" dy="75"/> |
| <feGaussianBlur result="blurOut" in="offOut" stdDeviation="10"/> |
| <feBlend in="SourceGraphic" in2="blurOut" mode="normal"/> |
| </filter> |
| </defs> |
| <path d="M100 100 L400 100 L400 400 L100 400 Z" style="fill:rgba(0,0,0,0); stroke-width:50; stroke:url(#gradient); filter:url(#shadow)"/> |
| </svg> |
