.lo_1280_center {width:1280px;margin:0 auto;clear:both;position:relative;}
.lo_1280 {width:1280px;clear:both;position:relative;}
.lo_990 {width:990px;clear:both;position:relative;}
.lo_1200_center {width:1200px;margin:0 auto;clear:both;position:relative;}
.lo_550_center {width:550px;margin:0 auto;clear:both;position:relative;}
.lo_550 {width:550px;clear:both;position:relative;}