body {
    margin: 0;
    font-family: 'Roboto', sans-serif;
    color: #fff;
    background: linear-gradient(135deg, #0000ff, #8a2be2);
    line-height: 1.6;
}

h1, h2, h3 {
    font-family: 'Orbitron', sans-serif;
    font-weight: bold;
    text-align: center;
}

.container {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
    padding: 20px;
    max-width: 1440px;
    margin: 0 auto;
}

.card {
    flex: 1 1 calc(33.33% - 20px);
    margin: 10px;
    padding: 20px;
    border-radius: 10px;
    background: rgba(0, 0, 0, 0.3);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.card:hover {
    transform: scale(1.05);
}

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

.button {
    position: relative;
    display: inline-block;
    padding: 10px 20px;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    overflow: hidden;
    transition: all 0.3s ease;
}

.button::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    opacity: 0;
    transition: all 0.3s ease;
}

.button:hover {
    background-color: #0056b3;
}

.button:hover::after {
    width: 150%;
    height: 150%;
    opacity: 1;
}

article {
    background: rgba(0, 0, 0, 0.5);
    padding: 20px;
    border-radius: 10px;
    margin: 20px auto;
    max-width: 1200px;
}

code {
    background: #000;
    color: #0f0;
    padding: 5px;
    border-radius: 5px;
    font-family: 'Courier New', monospace;
    display: block;
    overflow-x: auto;
}

pre {
    background: #000;
    padding: 10px;
    border-radius: 5px;
    margin: 10px 0;
}

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

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

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

svg circle {
    animation: rotate 2s linear infinite;
}