* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
li {
  list-style: none;
}
a {
  text-decoration: none;
}

.center {
  width: 1280px;
  margin: 0 auto;
}

.header .nav {
  width: 100%;
  height: 70px;
  position: absolute;
  top: 0;
  z-index: 20;
}
.header .nav .center {
  height: 70px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.header .nav .logo {
  background-image: url(../image/index/logo.png);
  width: 42px;
  height: 42px;
  background-size: cover;
  margin-right: 50px;
}
.header .nav .left {
  display: flex;
}
.header .nav .left .tab {
  display: flex;
}
.header .nav .left .tab > a {
  color: #cfd3d9;
  font-style: 15px;
  line-height: 42px;
  margin-right: 40px;
}
.header .nav .left .tab > a.active {
  color: #fff;
  border-bottom: 2px solid #fff;
}
.header .nav .phone {
  background-image: url(../image/index/phone.png);
  background-size: 16px;
  background-repeat: no-repeat;
  font-style: 15px;
  color: #fff;
  line-height: 16px;
  padding-left: 24px;
}
/* 备案 */
.record {
  background: #1e2023;
  height: 80px;
  line-height: 80px;
  text-align: center;
  color: #fff;
}