.header{
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: #fff;
  height: 96px;
  box-shadow: 0 0 10px #e6e6e6;
  z-index: 1001;
}
.logo{
  display: inline-block;
  width: 96px;
  height: 96px;
  padding: 0;
  background: url("../images/pc/logo.jpg") center no-repeat;
}
.header .nav-tabs a{
  height: 96px;
  line-height: 93px;
  text-align: center;
  width: 100px;
  padding: 0;
  font-weight: normal;
  font-size: 16px;
  border-bottom: solid transparent 3px;
}
.header .nav-tabs a:hover{
  background: #eee;
  color: #45be8d;
  padding: 0;
}
.header .nav-tabs .active a{
  border-color: #45be8d;
}
.footer{
  background: #e3e3e3;
  font-size: 14px;
  color: #666;
}
.copyright{
  width: 450px;
  text-align: center;
  padding-top: 40px;
  line-height: 2;
  display: inline-block;
}
.code-list{
  margin-right: 70px;
  padding: 35px 0;
  height: 132px;
}
.code-list li{
  float: left;
  text-align: center;
  padding-left: 45px;
}
.code-list img{
  margin: 3px 0 5px 0;
}
.banner-about{
  background: url("../images/pc/banner-2.jpg") center top no-repeat;
  height: 200px;
}
.title{
  text-align: center;
  font-size: 38px;
  line-height: 40px;
  font-weight: normal;
}
.title h3{
  padding-bottom: 10px;
}
.preface{
  color: #666;
  font-size: 22px;
  line-height: 45px;
  width: 860px;
  margin: 0 auto;
}
.preface b{
  font-size: 26px;
  color: #333;
  font-weight: normal;
}
.icon-list a{
  border-radius: 100%;
  overflow: hidden;
  display: inline-block;
  margin: 20px 10px;
  width: 89px;
  height: 89px;
}
.img-list li{
  display: inline-block;
}
.img-list a{
  display: block;
  background: #fff;
  box-shadow: 0 0 10px #e6e6e6;
}
.img-list.expert{
  height: 224px;
  text-align: center;
}
.img-list.expert li{
  padding: 15px;
}
.img-list.expert a{
  width: 240px;
  height: 194px;
}
.img-list.certificate{
  height: 523px;
}
.img-list.certificate li{
  margin: 100px 0;
  padding-right: 20px;
  float: left;
}
.img-list.certificate a{
  width: 490px;
  height: 323px;
  padding: 0;
  background: none;
}
.img-list.about{
  height: 343px;
  padding: 100px 0;
}
.img-list.about li{
  width: 283px;
  margin-right: 75px;
  float: left;
}
.img-list.about p{
  background: #fff;
  padding: 35px 45px;
  height: 237px;
  box-sizing: border-box;
  color: #666;
  font-size: 17px;
  line-height: 30px;
  box-shadow: 0 10px 10px #efefef;
}
.img-list.document li{
  display: block;
  padding-top: 10px;
}
.img-list.document li:last-child{
  padding-top: 0;
}