body {
    margin: 0;
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    letter-spacing: 0.5px;
    background: linear-gradient(135deg, #000066, #4B0082);
    color: white;
    overflow-x: hidden;
}

h1, h2, h3 {
    font-family: 'Futura', sans-serif;
    font-weight: bold;
    margin-top: 20px;
}

a {
    color: #FFA500;
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: #FF7F00;
}

.container {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    padding: 20px;
}

.item {
    flex: 1 1 calc(33.33% - 20px);
    margin: 10px;
    background: rgba(255, 255, 255, 0.1);
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.item img {
    width: 100%;
    height: auto;
    border-radius: 10px;
}

.parallax {
    background-image: url('https://images.gptkong.com/demo/sample1.png');
    height: 500px;
    background-attachment: fixed;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
}

.button {
    background-color: #FFA500;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s ease;
    margin: 10px;
}

.button:hover {
    background-color: #FF7F00;
}

@media (max-width: 768px) {
    .item {
        flex: 1 1 calc(50% - 20px);
    }
}

@media (max-width: 480px) {
    .item {
        flex: 1 1 100%;
    }

    .parallax {
        height: 300px;
    }
}

code {
    background: rgba(0, 0, 0, 0.5);
    padding: 5px 10px;
    border-radius: 5px;
    color: #FFA500;
    font-family: monospace;
}

pre {
    background: rgba(0, 0, 0, 0.7);
    padding: 15px;
    border-radius: 10px;
    overflow-x: auto;
}

header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 20px;
    z-index: 1000;
}

header nav a {
    margin-left: 20px;
    color: white;
    text-decoration: none;
    rel: "nofollow";
}

footer {
    text-align: center;
    padding: 20px;
    background: rgba(0, 0, 0, 0.8);
    margin-top: 50px;
}

@media (max-width: 480px) {
    header nav a {
        display: block;
        margin: 10px 0;
    }
}