This was the idea behind XSL (and DSSSL before that). You transform semantic markup into a pure presentation format. By moving the transformation to the server

This was the idea behind XSL (and DSSSL before that). You transform semantic markup into a pure presentation format. By moving the transformation to the server you can have all the complexity of selectors, rules, inheritance, cascade etc resolved on the server and have the browser just receive low-level rendering instructions. Of course you can't have any form of dynamic HTML and accessibility would go out the windows.