.header-banner .isbanner{margin-right: -30%; margin-left: -30%;}	
@media (max-width:992px) {
  .header-banner .isbanner{margin-right: -45%; margin-left: -45%;}	
  .header-banner .isbanner img{min-height: 118px;}
  .mb50{margin-bottom: 30px;}
}

.tab-brief.card > .hd{background: #e8f4ff;}
.tab-brief.card > .hd li.on{background: #0056a4;}

.main-part .bd ul li a.item{height: 4.5em; line-height: 4.5em; background: none; border: none;}
.main-part .bd ul li a.item span{position: relative; z-index: 5; text-align: center;}
.main-part .bd ul li a.item:after{position: absolute; top: 0; right: 0; bottom: 0; left: 0; content: ""; background: url(../images/menu_li_bg.png) repeat-x top #d4e8fa; border: 1px solid #d8e3fd; border-radius: 5px;}
.main-part .bd ul li a.item:before{position: absolute; top: 4px; right: -3px; bottom: -4px; left: 3px; content: ""; background: #333; border-radius: 5px; opacity: .15}
@media (max-width:992px) {
  .main-part .bd ul li{width: 33.33333%;}	
}
@media (max-width:640px) {
  .main-part .bd ul li{width: 50%;}	
  .main-part .bd ul li a.item{height: 3.75em; line-height: 3.75em;
}