.group-newsletter{
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    .newsletter-form{
        width: 50%;
        max-width: 35rem;
        flex-grow: 1;
        flex-shrink: 0;
    }
}

@media screen and (max-width: 770px ){
    .group-newsletter{
        flex-direction: column;
        .newsletter-form{
            width: 100%;
            max-width: 70rem;
        }
    }
}