各个浏览的hack

http://www.cnblogs.com/mofish/archive/2011/09/06/2168418.html

针对ie9的 css HACK

#element {
    color:orange;
}
#element {
    *color: white;    /* IE6 + 7, doesn't work in IE8/9 as IE7 */
}
#element {
    _color: red;     /* IE6 */
}
#element {
    color: green\0/IE8+9; /* IE8 + 9 + IE10pp4  */
}
:root #element { color:pink \0/IE9; }  /* IE9 + IE10pp4 */