| <!DOCTYPE html> | |
| <div id=host style="position: absolute"> | |
| <template shadowroot=open> | |
| <div id=shadowchild style="position: absolute"> | |
| <slot></slot> | |
| </div> | |
| </template> | |
| <div id=lightchild></div> | |
| </div> | |
| <script> | |
| window.offsetParentId = lightchild.offsetParent.id; | |
| </script> |