.topo-branco {
    background-color: white !important;
    padding: 1rem !important;
    -webkit-box-shadow: 0px 0px 121px -48px rgba(0,0,0,0.75);
    -moz-box-shadow: 0px 0px 121px -48px rgba(0,0,0,0.75);
    box-shadow: 0px 0px 121px -48px rgba(0,0,0,0.75);
}

.topo-branco img {
    width: 200px !important;
    max-width: 50% !important;
}