nclood-nav{height:72px;position:relative;display:block;background:linear-gradient(#f5f5f5, #dadada) center bottom/100% 30px no-repeat,linear-gradient(#fff, #fff) center top/100% 42px no-repeat;box-shadow:0 2px 0 0 rgba(0,0,0,0.2)}@media (max-width: 768px){nclood-nav{height:85px;background:linear-gradient(#fff, #fff) center bottom/100% 30px no-repeat,linear-gradient(#e60012, #e60012) center top/100% 42px no-repeat}}