<html xmlns:f="http://typo3.org/ns/TYPO3/Fluid/ViewHelpers"
    data-namespace-typo3-fluid="true">

    <f:render section="Header" arguments="{_all}" optional="1">
        {f:render(partial: 'Header', arguments: {
            uid: data.uid,
            layout: headerLayout,
            header: data.header
        })}
    </f:render>

    {f:render(section: 'Content', arguments: _all)}
</html>