Themes: Can elements be nested?
I'm reading the documentation on Creating themes and the examples mostly create only single elements and "helper" elements that may provide a visual aid, but that are still independant of each other.
Are the themes not able to nest an element inside of another element? For example, creating a header division and placing the tags for the logo and md_marquee inside it so that setting the max height of the logo or marquee to 100% will size it to fill the header element only (height-wise)?
This would make it much easier to modularize the layout.