| <svg id="svg" width="100%" height="100%" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> |
| <defs> |
| <filter id="morph"> |
| <feMorphology operator="erode" radius="0 20"/> |
| </filter> |
| </defs> |
| |
| <g filter="url(#morph)"> |
| <rect x="50" y="10" width="200" height="200" fill="black"/> |
| <rect x="250" y="210" width="200" height="200" fill="black"/> |
| </g> |
| |
| <rect x="50" y="30" width="200" height="160" fill="none" stroke-width="8" stroke="gray"/> |
| <rect x="250" y="230" width="200" height="160" fill="none" stroke-width="8" stroke="gray"/> |
| <rect x="249" y="190" width="2" height="40" fill="none" stroke-width="8" stroke="gray"/> |
| |
| </svg> |