body {
    background: #fff url(../img/bg.jpg);
    background-position: fixed;
    background-repeat: no-repeat;
    background-size: cover;
}


#prodaub-topo{display: block;}
#prodaub-base{display: none;}
@media (max-width: 500px) {
    #prodaub-topo{display: none;}
    #prodaub-base{display: block;}
}

.logo {
    margin-top: 60px;
    margin-bottom: 60px;
    text-align: left;
    width: 100%;
    height: auto;
}

.boxcard {
    max-width: 600px;
    height: auto;
    margin: 0 auto;
    border: 0px #000 solid;
    margin-top: 60px;
}

.card1 {
    width: 18rem;
    float: left;
    margin-right: 20px;
}

.card2 {
    width: 18rem;
    float: left;
    min-height: 216px;
}

@media (max-width: 600px) {
    .logo img {
        width: 150px;
        height: auto;
    }
    .boxcard {
        width: 100%;
        height: auto;
        margin: 0 auto;
        border: 1px #000 solid;
        margin-top: 60px;
    }
    .card1 {
        width: 18rem;
        margin-right: 20px;
        margin: 0 auto;
    }
    .card2 {
        width: 18rem;
        min-height: 216px;
        margin: 0 auto;
    }
}

.card {
    background-color: rgba(245, 245, 245, 0.7);
}

.card-header,
.card-footer {
    opacity: 1
}

label {
    font-weight: bold;
}