I've debated the following:
```
<rx-page>
    <rx-page-title>My Title</rx-page-title>
    <rx-page-subtitle>My Subtitle</rx-page-subtitle>
    <rx-page-actions>
        <rx-page-action>Action</rx-page-action>
    </rx-page-actions>
    <rx-page-content>
        ... all the content goes here ...
    </rx-page-content>
</rx-page>
```
but man that's verbose.