*{ margin:0; padding:0; border:0;}

body{ background:#000000;}

.bg{ width:1003px; height:694px; margin:0 auto; background:url(../images/index.jpg) no-repeat;}
.b1{ width:100%; height:160px;}
.b3{ width:600px; height:50px; margin:0 auto; text-align:center; padding-top:70px;}