body {
    background-color: #f4f7f6;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    padding: 20px;
}

#main-header {
    color: #c5050c;
    text-align: center;
    border-bottom: 2px solid #333;
}

.topic-image {
    display: block;
    margin: 20px auto;
    max-width: 400px;
    border: 3px solid #ddd;
    border-radius: 8px;
}

.content-section {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    padding: 25px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}