.isPc .main {
  margin-top: 35%;
}

.isPc .main,
.isPc .topBox,
.isPc .w {
  width: 1280px;
}

.isPc .nav {
  padding-left: 0;
}

.isPc .nav ul {
  display: flex;
  align-items: center;
  justify-content: center;
}