Public attributes and slots
| Attribute | Contract |
|---|---|
| label | Fallback accessible group name, Sections by default. |
| aria-label | Overrides the group name. |
| fit | content uses natural height; fill occupies a definite parent and shares remaining height between open sections. |
| class | Inherited theme and density classes. |
| hidden | Presence hides the complete group; until-found retains native semantics. |
| dir | Inherited native ltr/rtl flow. |
The default slot contains direct cem-expansion elements using layout=panel and indicator=start. summary accepts icon/text markup; header-actions is a sibling slot for counts and contextual buttons. Enter/Space toggle each native header. There is no forced single-open state, group selection or synthetic navigation event. Collapsed content stays instantiated.
Five theme modes
Examples and saved projects
Files and directories
Generated artifacts
Examples and saved projects
Files and directories
Generated artifacts
Examples and saved projects
Files and directories
Generated artifacts
Examples and saved projects
Files and directories
Generated artifacts
Examples and saved projects
Files and directories
Generated artifacts
Examples and saved projects
Files and directories
Generated artifacts
First content
Second content