body{background-color:#c8c8c8;}
.main_bg{ width:1000px;box-shadow:0 3px 6px rgba(0,0,0,0.3);  background-color:#fff; margin:0 auto; height:900px}
.page-top-min{height:80px; padding:15px 20px;box-shadow:0 3px 6px rgba(0,0,0,0.3); margin-bottom: 10px;}
.page-top-min .logo img{ width:100%;}
.page-top-min .logo,.page-top-min span{ float:left;}
.page-top-min .logo{ width:170px;}
.page-top-min span{ font-size:20px;color:#2591bd;padding-left: 15px; margin-top:18px;}
.fleft{float: left; }
.fright{float: right;}
.content{box-shadow:0 3px 6px rgba(0,0,0,0.3);}

.clearfix:before,
.clearfix:after,
.dl-horizontal dd:before,
.dl-horizontal dd:after,
.container:before,
.container:after,
.container-fluid:before,
.container-fluid:after,
.row:before,
.row:after,
.form-horizontal .form-group:before,
.form-horizontal .form-group:after,
.btn-toolbar:before,
.btn-toolbar:after,
.btn-group-vertical > .btn-group:before,
.btn-group-vertical > .btn-group:after,
.nav:before,
.nav:after,
.navbar:before,
.navbar:after,
.navbar-header:before,
.navbar-header:after,
.navbar-collapse:before,
.navbar-collapse:after,
.pager:before,
.pager:after,
.panel-body:before,
.panel-body:after,
.modal-footer:before,
.modal-footer:after {
  display: table;
  content: " ";
}
.clearfix:after,
.dl-horizontal dd:after,
.container:after,
.container-fluid:after,
.row:after,
.form-horizontal .form-group:after,
.btn-toolbar:after,
.btn-group-vertical > .btn-group:after,
.nav:after,
.navbar:after,
.navbar-header:after,
.navbar-collapse:after,
.pager:after,
.panel-body:after,
.modal-footer:after {
  clear: both;
}