| <!DOCTYPE html> | |
| <body> | |
| <div style="filter: url('#filter'); width: 100px; height: 100px; padding: 1px;"> | |
| <div style="background-color: red; width: 98px; height: 98px;"></div> | |
| </div> | |
| <svg width="0" height="0"> | |
| <filter id="filter"> | |
| <feFlood result="outlineColor" flood-color="green"/> | |
| <feMorphology in="SourceAlpha" operator="dilate" radius="1"/> | |
| <feComposite operator="in" in="outlineColor"/> | |
| </filter> | |
| </svg> | |
| </body> |