.form-control {
    margin-bottom: 3px;
}

.container-promo {
    height: calc( 100% - 100px );
}

.container-redes {
    position: fixed;
    bottom: 10px;
    right: 10px;
}

.redes {
    display: flex;
    flex-direction: column;
}

.redes a img {
    width: 60px;
    height: 60px;
}

.errors-fixed {
    position: fixed;
    right: 10px;
    max-width: calc( 100vw - 45px);
}