.titulo-estilo {
    font-size: 30px;
    margin-top: 40px;
    border-bottom: 1px solid #ccc;
    color: #0099F1;
    margin-bottom: 10px;
    font-weight: 600;
}

.div-centro {
    width: 640px;
    height: auto;
    position: relative;
    margin-top: 10px;
    margin-bottom: 10px;
    border-radius: 10px;
}

/*MENOR A UNA TABLET*/
@media only screen and (max-width: 767px) {
    .div-centro {
        width: auto !important;
    }
}