.header2{width: 100%;  height: 68px; z-index: 33;transition: All 0.4s ease-in-out;background: #206eff;opacity: 0.9;}
.headerbox2{ width: 1386px; margin: 0 auto;max-width: 94%;height: 68px; position: relative;}
.nav2{text-align: center;}
.nav2 ul{overflow: hidden; font-size: 0;  display: flex;}
.nav2 li{ font-size: 20px; line-height: 70px; width: 20%; color: white;}