@media only screen and (max-width: 768px){
    header .nav nav .desktop{
        display: none;
    }
    header .nav nav .mobile{
        display: block;
    }
    header .nav nav{
        width: 52px;
        height: 52px;
        padding: 0;
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: center;
    }
}