.container {
  width: 1098px;
  margin: 0 auto;
} 
/* header */
.header {
  padding: 20px 0;
  margin: 0 auto;
  width: 100%;
  height: 78px;
  position: absolute;
  left: 0;
  top: 0;
  right: 0;
  background-color: #ffffff;
  z-index: 99;
}
.fixed-header {
  position: fixed;
  left: 0;
  top: 0;
  right: 0;
  box-shadow: #D3D3D3 2px 0px 20px;
}
.header .logo {
  float: left;
  width: 154px;
  height: 38px;
}
.header ul {
  float: right;
  height: 38px;
}
.header ul li {
  height: 38px;
  line-height: 35px;
  margin-right: 46px;
  float: left;
}

.line {
  height: 3px;
  background: #0f7b3b;
  display: flex;
  align-items: center;
}
/* banner */
.banner {
  width: 100%;
  height: 452px;
  margin-top: 78px;
}
.banner img {
  width: 100%;
  height: 452px;
}
 .span_show {
  color: #0f7b3b;
  border-bottom: 3px solid #0f7b3b;
  padding: 5px 0;
}

/* 修改后的样式 */
/* .header{
  height: auto;
  margin: 0 auto;
  padding: 20px 0;
  position: absolute;
  left: 0;
  top: 0;
  right: 0;
  background-color: #ffffff;
  z-index: 99;
}
.fixed-header {
  position: fixed;
  left: 0;
  top: 0;
  right: 0;
  box-shadow: #D3D3D3 2px 0px 20px;
}
.navbar-default {
  background-color: #fff;
  border-color: none;
}
.navbar-default .navbar-collapse{
  border-color: none;
}
.container-fluid{
  display: flex;
  justify-content: space-between;
}
.navbar-nav>li>a {
  padding-top: 10px;
  padding-bottom: 10px;
  line-height: 20px;
  text-align: center;
} */
/* banner */
/* .banner {
  width: 100%;
  height: auto;
  max-height: 452px;
  margin-top: 94px;
}
.banner img {
  width: 100%;
  height: auto;
  max-height: 452px;
} */