1 /***** Selector Hacks ******/
2 /* IE 6 and below */
3 * html #uno { color: red }
4
5 /* IE 7 and below */
6 *:first-child+html #dos { color: red }
7
8 /* IE 7 and modern browsers */
9 html>body #tres { color: red }
10
11 /* Modern browsers (not IE 7) */
12 html>/**/body #cuatro { color: red }
13
14 /* Opera 9.27 and below */
15 html:first-child #cinco { color: red }
16
17 /* Safari */
18 html[xmlns*=""] body:last-child #seis { color: red }
19
20 /*safari 3+, chrome 1+, opera9+, ff 3.5+ */
21 body:nth-of-type(1) #siete { color: red }
22
23 /* safari 3+, chrome 1+, opera9+, ff 3.5+ */
24 body:first-of-type #ocho { color: red }
25
26 /* saf3, chrome1+ */
27 @media screen and (-webkit-min-device-pixel-ratio:0) {
28 #diez { background: #FFDECE; border: 2px solid #ff0000 }
29 }
30
31 /***** Attribute Hacks ******/
32
33 /* ie6 and below */
34 #once { _color:blue }
35
36 /* ie7 and below */
37 #doce { *color: blue } /* or #color:blue */
38
39 /* 'Modern Browsers' includes IE8, whether you agree or not.. :) */
40
2 /* IE 6 and below */
3 * html #uno { color: red }
4
5 /* IE 7 and below */
6 *:first-child+html #dos { color: red }
7
8 /* IE 7 and modern browsers */
9 html>body #tres { color: red }
10
11 /* Modern browsers (not IE 7) */
12 html>/**/body #cuatro { color: red }
13
14 /* Opera 9.27 and below */
15 html:first-child #cinco { color: red }
16
17 /* Safari */
18 html[xmlns*=""] body:last-child #seis { color: red }
19
20 /*safari 3+, chrome 1+, opera9+, ff 3.5+ */
21 body:nth-of-type(1) #siete { color: red }
22
23 /* safari 3+, chrome 1+, opera9+, ff 3.5+ */
24 body:first-of-type #ocho { color: red }
25
26 /* saf3, chrome1+ */
27 @media screen and (-webkit-min-device-pixel-ratio:0) {
28 #diez { background: #FFDECE; border: 2px solid #ff0000 }
29 }
30
31 /***** Attribute Hacks ******/
32
33 /* ie6 and below */
34 #once { _color:blue }
35
36 /* ie7 and below */
37 #doce { *color: blue } /* or #color:blue */
38
39 /* 'Modern Browsers' includes IE8, whether you agree or not.. :) */
40
原文出处：http://ajaxian.com/archives/css-browser-hacks
另有一个测试页面在：http://paulirish.com/work/csshacks.html
