CSS高级技巧

.nav li:not(:last-child){border-right:1px solid #666;}

IE hack list

selector{
    property:value;          /*所有浏览器*/
    property:value\9;        /*所有IE浏览器*/
    property:value\0;        /*IE8*/
    +property:value;         /*IE7*/
    _property:value;         /*IE6*/
    *property:value;         /*IE6-7*/
}