Following is the list of structural style classes, for theming classes visit
| Name | Element |
|---|---|
| p-treeselect | Container element. |
| p-treeselect-label-container | Container of the label to display selected items. |
| p-treeselect-label | Label to display selected items. |
| p-treeselect-trigger | Dropdown button. |
| p-treeselect-panel | Overlay panel for items. |
| p-treeselect-items-wrapper | List container of items. |