.menu {
    padding: 10px;
    /* ajusta el contenido al centro */
    justify-content:center ;
    text-align:center;
    border-radius: 1rem;
    background-color: navy;
    background: radial-gradient(closest-side, blue, navy);
    font-family:'Lucida Sans', 'Lucida Sans Regular', 'Lucida Grande', 
                'Lucida Sans Unicode', Geneva, Verdana, sans-serif;
    font-size:medium; 
}
.menu>a {
    color: white;
}
.menu>a:visited {
    color: white;   
}