<!-- Conditional styles asset for PID in rootline of 21 -->
<v:condition.iterator.contains needle="21" haystack="{v:page.rootline() -> v:iterator.extract(key: 'uid')}">
<v:asset.style path="/{settings.path.css}/expo.css" standalone="1" external="1"/>
</v:condition.iterator.contains>
PIDinRootline in Fluid
PIDinRootline condition in Fluid using VHS