header{
    background: url(../img/capas/capa8.jpg) no-repeat;
    height: 500px;
    background-size: cover;
    background-position: center;
}

.galeria{
    margin-top: 50px;
    margin-bottom: 50px;
}

.galeria img{
    max-width: 100%;
    border-radius: 25px;
    width: 640px;
    height: 200px;
}

.galeria img:hover{
    transform: scale(1.1);
}