A good book to learn HTML/CSS

I'd like to write yet another shitty layout engine and browser in a Lisp-like language I made.  While I do have minimal knowledge of HTML and CSS, it's not sufficient and this is why I am asking you now, /anus/, what do you think is the best HTML/CSS reference nowadays?

Use SXML:


(sxml (doctype "text/sxml")
 (head
  (title "sxml is neat")
  (script "text/scheme"
   '(
     (defun (fact x)
      (cond
       ((> x 1) (* x (fact (- x 1))))
       (t 1))))))
 (body
  (h1 "sxml is really neat")
  (blink "poop")
  (p "Lorem ipsum dolor sit amet.  Lorem ipsum dolor sit amet.  Lorem ipsum dolor sit amet.")))