NO. NO. NO.
This is exactly why styling in HTML failed. Things work great when they are broken down anatomically into specific functions. Let's not try to put all of our eggs in one basket.
(brings back memories of one of my earliest web apps where I'd written a template system that on purpose delegated all by basic conditions and looping to the calling script on purpose to enforce separation; and then two of my developers tried to sneak in a new tag to allow them to embed Perl in the templates...)