body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    line-height: 1.6;
    background-color: #f9f9f9;
}

header {
    background-color: #333;
    color: #fff;
    padding: 20px;
    text-align: center;
}

.article-container {
    max-width: 800px;
    margin: 40px auto;
    padding: 0 20px;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

footer {
    background-color: #333;
    color: #fff;
    text-align: center;
    padding: 20px;
}