.header {
  width: 100%;
  height: 13.06666667vw;
  background: #1c1c1c;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.header .logo {
  width: 10.93333333vw;
  margin-left: 3.73333333vw;
}
.header .menu {
  width: 8vw;
  height: 100%;
  position: relative;
}
.header .menu img {
  width: 4.66666667vw;
  position: absolute;
  margin: auto;
  top: 0;
  left: 0;
  bottom: 0;
}
.cover {
  position: fixed;
  width: 100%;
  height: 100%;
  background: #1c1c1c;
  top: 0;
  left: 0;
  z-index: -1;
  opacity: 0;
  transition: 0.7s;
}
.cover .cover-h {
  width: 100%;
  height: 13.06666667vw;
  background: #1c1c1c;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.cover .cover-h .logo {
  width: 10.93333333vw;
  margin-left: 3.73333333vw;
}
.cover .cover-h .menu {
  width: 4.66666667vw;
  margin-right: 3.33333333vw;
}
.cover .cover-nav {
  box-sizing: border-box;
  padding: 1.06666667vw 11.2vw 0 11.2vw;
  font-size: 2.93333333vw;
}
.cover .cover-nav ul li {
  height: 6.66666667vw;
  line-height: 6.66666667vw;
  border-bottom: 0.13333333vw solid #575757;
  margin-top: 5.33333333vw;
}
.click {
  opacity: 1;
  z-index: 99;
}