main img {
    margin-bottom: 10px;
    height: 600px;
    max-width: 100%;
    height: auto;
    user-select: none;  
}

main div {
    display: flex;
    flex-direction: column;
    width: 100%;
    margin-bottom: 30px;
    justify-content: center;
    align-items: center;
}

/* En-dessous de 900 px */
@media screen and (max-width: 900px) {
    main div{
        padding : 0 20px;
    }
}