body {
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
    background-color: #000;
    color: #fff;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}

header {
    width: 100%;
    padding: 10px 20px;
    background-color: #111;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.5);
    position: fixed;
    top: 0;
    z-index: 1000;
}

header nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

header .logo {
    height: 40px;
}

header ul {
    list-style: none;
    display: flex;
    margin: 0;
    padding: 0;
}

header ul li {
    margin: 0 10px;
}

header ul li a {
    text-decoration: none;
    color: #fff;
    font-size: 16px;
    transition: color 0.3s ease;
}

header ul li a:hover {
    color: #00f;
}

main {
    margin-top: 100px;
    text-align: center;
}

.glowing-box {
    padding: 20px;
    border: 2px solid #00f;
    border-radius: 10px;
    background-color: #111;
    box-shadow: 0 0 20px #00f;
    display: inline-block;
    text-align: center;
    max-width: 90%;
    margin: 0 auto;
}

.glowing-box h1 {
    margin: 0 0 10px;
    font-size: 2rem;
    color: #fff;
}

.glowing-box p {
    margin: 0;
    font-size: 1.2rem;
    color: #fff;
}

/* Mobile-friendly adjustments */
@media (max-width: 768px) {
    header nav {
        flex-direction: column;
    }

    header ul {
        flex-direction: column;
        align-items: center;
    }

    header ul li {
        margin: 5px 0;
    }

    .glowing-box h1 {
        font-size: 1.5rem;
    }

    .glowing-box p {
        font-size: 1rem;
    }
}