body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #0a0a23;
    color: #ffffff;
}

header {
    background-color: #1a1a3d;
    padding: 20px;
    text-align: center;
}

nav ul {
    list-style-type: none;
    padding: 0;
}

nav ul li {
    display: inline;
    margin: 0 15px;
}

nav a {
    color: #00ccff;
    text-decoration: none;
}

nav a:hover {
    color: #ff6600;
}

main {
    padding: 20px;
    max-width: 800px;
    margin: 0 auto;
}

img {
    width: 100%;
    max-width: 400px;
    height: auto;
    border: 2px solid #00ccff;
    border-radius: 10px;
}

button {
    background-color: #ff6600;
    color: white;
    padding: 10px 20px;
    border: none;
    cursor: pointer;
}

button:hover {
    background-color: #cc5200;
}

.hidden {
    display: none;
}

footer {
    text-align: center;
    padding: 10px;
    background-color: #1a1a3d;
    position: fixed;
    bottom: 0;
    width: 100%;
}