body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    background-color: #424242;
    color: #000;
}

/* Contenedor de navegación */
.header {
    background-color: #000000;
    padding: 20px 0;
}

.navigation ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 20px;
    justify-content: center;
}

.navigation a {
    display: block;
    width: 200px;
    padding: 15px 10px;
    text-align: center;
    color: #000;
    text-decoration: none;
    font-weight: 600;
    border-radius: 10px;
    background-color: #d6d6d6;
    border: 1px solid #8c8c8c;
    transition: all 0.2s ease-in-out;
}

.navigation a:hover {
    color: #fff;
    background-color: #626262;
    border-color: #626262;
}
.navigation a:active {
    transform: scale(0.98);
}