.nav li a.active { border-top: 6px solid #e55c3a; }
.nav li a:hover { color: #e55c3a; }
.ico1 { background: url("../images/bdata_b1.gif") no-repeat; }
.ico2 { background: url("../images/bdata_b2.gif") no-repeat; }
.ico3 { background: url("../images/bdata_b3.gif") no-repeat; }
.logo { background: url("../images/b_logo.gif") no-repeat 0 14px; }
.banner { background: url("../images/bdatabg.jpg") no-repeat center center;}
.bannerwrap div { position: absolute; }
.eland_t1 { top: 164px; left: 0; width: 400px; height:54px; background: url("../images/bdata_t1.png") no-repeat;  }
.eland_t2 { top: 245px; left: 0; width: 400px; height:54px; background: url("../images/bdata_t2.png") no-repeat;  }
.eland_t3 { top: 125px; right: 0; width: 568px; height:378px; background: url("../images/bdata_t3.png") no-repeat;  }
.eland_t4 { top: 120px; right: 414px; width: 140px; height:142px; background: url("../images/bdata_t4.png") no-repeat;  }
.eland_t5 { top: 206px; right: 0px; width: 164px; height:164px; background: url("../images/bdata_t5.png") no-repeat;  }
.eland_btn { position: absolute; display: none; cursor: pointer; top: 334px; left: 0; width: 156px; height:46px; background: #FF7E00; color: #fff; font-size: 24px; letter-spacing: 0.1em; text-align: center; line-height: 46px;  }
.bannerwrap .active { display: block; }