The available selector types represent a subset of the full CSS standard, picking those features which are reasonably suited in the context of the Laika document model. It includes type, class and id selectors, but no attribute selectors as most Laika tree elements primarily contain a sequence of children and not many other properties to match against.
It also supports the CSS syntax to declare selectors for child elements (e.g. Paragraph .intro) or immediate children (e.g. Paragraph > .intro).
A predicate that holds if the given type name matches the type of the target element.
A predicate that holds if the given type name matches the type of the target element. In contrast to web CSS, in Laika this is not a tag name, but the (unqualified) name of the class of the target element instance (e.g. Paragraph).