nav{
    z-index: 10;
    height: 10vh;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: 0.2s;
    padding: 15px 30px;
}
nav .logo{
    font-family: GravityBold;
    text-shadow:#fff 0 0 1px,
                #fff 0 0 2px;
    color: #f2f2f2;
    position: relative;
    font-weight: 700;
    text-decoration: none;
    font-size: 3.5vh;
    letter-spacing: 2px;
}
nav ul{
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}
nav ul li{
    position: relative;
    list-style: none;
    height: 100%;
}
nav ul li a{
    font-family: AlibabaPuHuiTi-Regular;
    color: #e3e3e3;
    font-size: 2.2vh;
    position: relative;
    margin: 0 15px;
    text-decoration: none;
    letter-spacing: 2px;
    font-weight: 500;
    cursor: pointer;
}
.sticky{
    background-color: #000000;
}