* {
  margin: 0;
  padding: 0;
}

li {
  list-style: none;
}
a {
  text-decoration: none;
}
.nav {
  position: fixed;
  top: 0;
  width: 100%;
  top: 0;
  padding: 0.5rem 0.5rem;
  background-color: rgba(255, 255, 255, 0.4);
  display: flex;
  align-items: center;
  font-size: 0.8rem;
}
.nav img {
  margin-right: 0.2rem;
  width: 1.2rem !important;
}
.dns {
  text-align: center;
  color: #fff;
  background: url(/jc/img/hero.jpg) center center no-repeat;
  background-size: 125% auto;
  height: 13rem;
}
.dns .dns-cover h2 {
  margin-bottom: 0.8rem;
}
.dns .dns-cover {
  height: 100%;
  padding: 3rem 2rem;
  box-sizing: border-box;
  background: rgba(0, 0, 0, 0.4);
  font-size: 14px;
}
.tabhd {
  margin-top: 10px;
}
.tabhd ul {
  padding: 10px 0;
  display: flex;
  justify-content: space-around;
}
.tabhd ul li {
  padding: 0.7rem 1rem;
  border-radius: 3px;
  border: 1px solid #ddd;
  font-size: 0.9rem;
  color: #000;
}
.tabhd ul li.active {
  border-color: #1890ff;
  background-color: #1890ff;
  color: #fff;
}
.con-box {
  padding: 0 1rem;
  font-size: 0.9rem;
}
.ul_btn {
  display: flex;
  justify-content: center;
}
.ul_btn li {
  padding: 0.5rem 1rem;
  background-color: #fafafa;
  border: 1px solid #eee;
  margin: 2rem 1rem;
  border-radius: 2rem;
}
/* .ul_btn li a {
  text-decoration: underline;
} */