screen_out
overflow:hidden;display:block;position:absolute;left:-9999px;width:1px;height:1px;font-size:0;line-height:0;.hide{visibility:hidden; overflow:hidden; width:0; height:0; font-size:0; line-height:0;} .blind{overflow:hidden;position:absolute;top:0;left:0;width:1px;height:1px;font-size:0;line-height:0;}
