.marcas-bg {padding: 70px 0; box-shadow: -3px -2px 10px 0 rgba(0, 0, 0, 0.18);}
.img.marcas {display: flex; align-items: center; justify-content: center; height: 100%;}

@media(max-width: 990px) {
    .marcas-bg { padding: 45px 0; }
}