section {
    padding-bottom: 60px;
}
section .img-portada {
    width: 100%;
    -webkit-object-fit: cover;
    object-fit: cover;
    -webkit-object-position: center center;
    object-position: center center;
}

#section-top {
    padding-top: 30px;
}

#section-bottom {
    padding-top: 90px;
    text-align: center;
}
#section-bottom img {
    width: 40px;
    margin-bottom: 5px;
}
#section-bottom h2 {
    color: red;
    font-size: 15px;
    font-weight: 700;
}
@media(max-width: 991px){
    #section-bottom .row > div + div {
        margin-top: 30px;
    }
}