body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    margin: 0;
    padding: 0;
}

.container {
    max-width: 800px;
    margin: 20px auto;
    padding: 20px;
    background-color: #fff;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    border-radius: 5px;
}

h1 {
    color: #333;
    text-align: center;
}

h2 {
    color: #555;
    border-bottom: 2px solid #ddd;
    padding-bottom: 5px;
}

h3 {
    color: #666;
}

p, ul {
    line-height: 1.6;
    color: #444;
}

.week-list {
    list-style: none;
    padding: 0;
}

.week-list li {
    margin: 10px 0;
}

.week-list a {
    text-decoration: none;
    color: #007BFF;
    font-size: 18px;
}

.week-list a:hover {
    text-decoration: underline;
    color: #0056b3;
}

.back-link {
    display: block;
    margin-top: 20px;
    text-align: center;
    color: #007BFF;
    text-decoration: none;
}

.back-link:hover {
    text-decoration: underline;
}