Alternativas para desenvolvedores que não gostam, assim como eu, de utilizar comentários condicionais para diferencias seus CSS’ em diferentes browsers.
/***** Selector Hacks ******/
/* IE 6 and below */
* html #uno { color: red }
/* IE 7 and below */
*:first-child+html #dos { color: red }
/* IE 7 and modern browsers */
html>body #tres { color: red }
/* Modern browsers (not IE 7) */
html>/**/body #cuatro { color: red }
/* Opera 9.27 and below */
html:first-child #cinco { color: red }
/* Safari */
html[xmlns*=""] body:last-child #seis { color: red }
/*safari 3+, chrome 1+, opera9+, ff 3.5+ */
body:nth-of-type(1) #siete { color: red }
/* safari 3+, chrome 1+, opera9+, ff 3.5+ */
body:first-of-type #ocho { color: red }
/* saf3, chrome1+ */
@media screen and (-webkit-min-device-pixel-ratio:0) {
#diez { background: #FFDECE; border: 2px solid #ff0000 }
}
/***** Attribute Hacks ******/
/* ie6 and below */
#once { _color:blue }
/* ie7 and below */
#doce { *color: blue } /* or #color:blue */
