Hi Phill, I don't think you should use fixed height. The front-end developer set fixed height on element when he expects the content of that element not to be higher than the fixed height. And if you know the height of the child elements then you shouldn't set height of the container - it will be expanded as much as it needs. If there is a special positioning of the child elements you can control them with margin and padding. Below is a scheme that explains why you shouldn't use fixed height. If you provide me more information about the template (theme, css, mockups) I think that I can help you.
Best wishes, Jordan the Telerik team
I have just tested your sticky footer technique and it works fine with Sitefinity 4. Just as I have described in my previous post (the scheme, if you saw it) if you know what will be the size of the the child elements (and respectively the final width) you are able not to set the height - the result will be exactly the same!
You can set the padding-bottom of the content element to a fixed value(because you know what is the size), but for the content editor it will be easier to add, remove, edit the content items.
We have a discussion here about inheritance of the templates and the ability to drop new content in a placeholder of the parent template. There is positive and negative feedback for both approaches. Thank you for yours.