.banner {
    background-image: url(../img/ana-inicio.jpg);
    width: 100%;
    height: 450px;
    background-size: cover;
    background-position: 25% 30%;
}
.contenido a{
    text-decoration: none;
}
a:hover{
    color: #E4D485;
}
@media (max-width: 1000px) {
    .banner{
        height: 350px;
        background-position: 25% -30%;
    }
}