.manual-banner {
  min-width: 1200px;
  height: 180px;
  text-align: center;
  color: #fff;
  padding-top: 60px;
  background-image: url("../images/banner.png");
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center center;
}
.manual-banner .text-fir {
  font-size: 26px;
}
.manual-banner .text-sec {
  font-size: 22px;
  font-weight: 500;
  margin-top: 10px;
}
.manual-container {
  width: 1200px;
  margin: 0 auto;
}
.manual-nav {
  width: 100%;
  min-width: 1200px;
  height: 70px;
  box-shadow: 0 2px 8px 0 rgba(0, 0, 0, 0.15);
  background-color: #fff;
  margin-bottom: 1px;
  text-align: center;
}
.manual-nav .manual-nav-item {
  position: relative;
  display: inline-block;
  font-size: 16px;
  line-height: 20px;
  padding: 25px 10px;
  cursor: pointer;
  border-bottom: 3px solid transparent;
}
.manual-nav .manual-nav-item + .manual-nav-item {
  margin-left: 60px;
}
.manual-nav .manual-nav-item.active {
  color: #4592ff;
}
.manual-nav .manual-nav-item.active::before {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: #4592ff;
}
.manual-content {
  margin-top: 58px;
}
.manual-content .item {
  width: 100%;
  max-width: 520px;
  padding: 30px 30px 25px 30px;
  margin-bottom: 30px;
  transition: all 0.3s ease-in-out;
  box-shadow: 0px 0px 3px 0 rgba(0, 0, 0, 0.15), 0 0px 1px 0 rgba(0, 0, 0, 0.15);
}
.manual-content .item .title {
  font-size: 18px;
  line-height: 1;
  color: #333333;
  margin-bottom: 20px;
}
.manual-content .item .desc {
  font-size: 14px;
  line-height: 2;
  color: #777777;
  height: 6em;
}
.manual-content .item .dlcontent {
  margin-top: 18px;
}
.manual-content .item .dlcontent .pdf {
  width: 32px;
  height: 32px;
  margin-right: 20px;
}
.manual-content .item .dlcontent .dl {
  font-size: 14px;
  line-height: 1;
  color: #3981FC;
  margin-top: 8px;
}
.manual-content .item .dlcontent .dl img {
  width: 20px;
  height: 20px;
  cursor: pointer;
  vertical-align: middle;
}
.manual-content .item .dlcontent .dllink {
  color: #333;
}