Receive the output styling without inline attributes

Although, some similar discussion took place here
viewtopic.php?f=6&t=17129

I've decided to post one more topic, generally asking, is there any chance to receive the output styling without the attributes being set inside the html code (only using css).

For instance, the user inserts the image with width and height attributes. CKEditor will reproduce it as <img width="" height="">, however to make the code XHTML Strict compliant width and height have to go to the css.

But, taking into account the number of attributes combinations, which may be set inside the editor, is huge, I become to hesitate whether it's possible to predict all of them and put into the css.

What do you think?