title: A safe subset of CSS?
body: <p>Addressing all the browsers back to IE6 is quite challenging. Every browser supports different features of the specifications. Is there a guide on a safe subset of CSS which can be used across browsers (IE6,IE7,FF1,FF2,Safari,Opera)? That way I wouldn't have to test my style sheets in 6 different browsers after every small modification - and adjust to their irritating quirks.</p>