#da{
    display: flex;
    flex-direction:row;
    flex-wrap: wrap;
    width: 450;
    height: 800;
}
#nav{
    margin-top: 40px;
    padding: 0 16px;
    color: white;
    background-color: black;
    position: fixed;
    /* position: -webkit-sticky; */
    top: 0;
}
#de{
    display: flex;
    flex-direction:row;
    flex-wrap: wrap;
    width: 540;
    height: 800;
}

@media (max-width: 1080px) {
    
}