body {
    margin: 0;
    font-family: 'Open Sans', sans-serif;
    background: linear-gradient(135deg, #1e3c72, #2a5298);
    color: #fff;
}
header {
    text-align: center;
    padding: 50px 20px;
    background: linear-gradient(135deg, #2a5298, #1e3c72);
}
h1 {
    font-family: 'Roboto', sans-serif;
    font-size: 2.5em;
    margin-bottom: 10px;
}
nav a {
    color: #ff6f61;
    margin: 0 15px;
    text-decoration: none;
    rel: nofollow;
}
.container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    padding: 20px;
}
.card {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid #ddd;
    border-radius: 10px;
    padding: 20px;
    text-align: center;
    transition: transform 0.3s;
}
.card:hover {
    transform: scale(1.05);
}
.card img {
    width: 100%;
    height: auto;
    border-radius: 10px;
}
.button {
    padding: 10px 20px;
    background-color: #4CAF50;
    border: none;
    color: white;
    cursor: pointer;
    transition: background 0.3s;
}
.button:hover {
    background-color: #45a049;
}
pre {
    background: rgba(0,0,0,0.7);
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
}
@media (max-width: 768px) {
    header, .container {
        padding: 10px;
    }
    h1 {
        font-size: 2em;
    }
}