body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f8f8f8;
    color: #333;
}

header {
    background-color: #333;
    color: white;
    text-align: center;
    padding: 1em 0;
}

header h1 {
    margin: 0;
}

main {
    padding: 1em;
}

section {
    margin-bottom: 2em;
}

section h2 {
    color: #444;
    margin-bottom: 0.5em;
}

article {
    background-color: #fff;
    padding: 1em;
    margin-bottom: 1em;
    border-radius: 5px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

article h3 {
    margin-top: 0;
}

article a {
    color: #0066cc;
    text-decoration: none;
}

article a:hover {
    text-decoration: underline;
}

@media (max-width: 768px) {
    main {
        padding: 1em 0.5em;
    }
}