main{
    display: grid;
    grid-template-columns: 1fr;
    grid-template-areas:
        "hero"
        "entwickler";
}

#entwickler{
    grid-area: entwickler;
}

.hero{
    flex-direction: column-reverse;
}

@media screen and (min-width: 900px) {
    #entwickler{
        max-width: 70vw;
        margin-left: auto;
        margin-right: auto;
    }
}