.posgrado {
    background-image: url('../img/pccm.png');
    background-repeat: no-repeat;
    background-size: cover;
    max-width: 100%;
    height: 400px;
    padding-top: 20px;
}

.posgrado h1 {
    font-size: 42px;
    font-weight: bold;
    margin-bottom: 30px;
    margin-top: 140px;
    color: white;
    text-align: center;
}

.posgrado h3 {
    font-size: 26px;
    color: white;
    text-align: center;
    margin-bottom: 30px;
    margin-top: 20px;
}

.posgrado p {
    font-size: 20px;
    color: white;
    text-align: center;
}

.posgrado a {

}

.posgrado a {
    color: #ffffff;
    text-decoration: none;
}

.posgrado a:focus, a:hover {*/
    color: #23527c;
    text-decoration: underline;
}

@media only screen and (max-width: 900px) {
    .posgrado h1 {
        font-size: 20px;
    }

    .posgrado h3 {
        font-size: 18px;
    }

}