body {
    font-family: Arial;
    background-color: #F4F4F4;
    margin: 0;
    padding: 0;
}

header {
    background-color: #514AEF;
    color: white;
    text-align: center;
    padding: 20px;
}

footer {
    background-color: #1A3580;
    color: white;
    text-align: center;
    padding: 10px;
    width: 100%;
    position: fixed;
    bottom: 0;
    left: 0;
}

.contenedor1 {
    width: 350px;
    height: 250px;
    margin: 0 auto; /* centra horizontalmente */
}

.menu {
    color: white;
    text-align: center;
    padding: 14px 0;
    text-decoration: none;
    font-size: 17px;
    transition: background-color 0.35s;
    background-color: #333;
}

.menu a {
    color: white;
    text-decoration: none;
    padding: 14px 20px;
    display: inline-block;
}

.menu a:hover {
    background-color: brown;
    color: white;
}