body > header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: #fff;
  z-index: 999;
}
body > header > div {
  margin: 0 auto;
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  align-items: center;
  padding: 20px 15% 10px;
}
body > header .logoBox{
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;

}
body > header .logo {
  height: 68px;
  aspect-ratio: auto 62 / 68;
  width: 62px;
  margin-right: 20px;
}
body > header .companyName {
  color: rgb(31, 135, 232);
  display: flex;
  flex-wrap: wrap;
  flex-direction: column;
}
body > header .companyName span:nth-child(1) {
  font-size: 22px;
}
body > header .companyName span:nth-child(2) {
  font-size: 14px;
}
body > header .nav {
  display: flex;
  flex-direction: row;
  flex:1;
  justify-content: center;
}
body > header .nav li {
  list-style: none;
  height: 40px;
  line-height: 40px;
  border-radius: 20px;
  width: 80px;
  height: 40px;
  line-height: 40px;
  text-align: center;
  margin-right: 10px;
  cursor: pointer;
  position: relative;
}
body > header .nav li:hover {
  background: #f13a3a;
}
body > header .nav li:hover a{
  color:#fff;
}
body > header .nav li > a {
  color: #2b2b2b;
}
body > header .nav .active {
  background: #f13a3a;
}
body > header .nav .active > a {
  color: #ffffff;
}
body > header .nav li > div {
  position: absolute;
  top: 40px;
  left: 0;
  display: none;
  width: 80px;
  background: #f13a3a;
  font-size: 14px;
}
body > header .nav li > div a {
  display: block;
  width: 100%;
  color: #fff;
}
body > header .nav li > div a:hover {
  background: #cc0303;
}
body > header .nav li:hover > div {
  display: block;
}
body > header .nav li a {
  text-decoration: none;
}

body > header .nav  .top{
  background: #fff;
  height: 5px;
  width:100%;
  position: relative;
    overflow: hidden;
}
body > header .nav  .top::before{
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  right: 0;
  bottom: 0;
  transform-origin: left bottom;
  transform: rotate(45deg);
  background: #f13a3a;
}