标签：右上角 ott osi absolute top bsp tom abs nbsp
左上角 left:0; top:0; position:absolute;
左下角 left:0; bottom:0; position:absolute;
右上角 right:0; top:0; position:absolute;
右下角 right:0; bottom:0; position:absolute;
标签：右上角 ott osi absolute top bsp tom abs nbsp
原文地址：http://www.cnblogs.com/jgwz/p/6367166.html
