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

.container {
    width: 300px;
    margin: 100px auto;
    padding: 20px;
    background: white;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

.sidebar {
    width: 200px;
    background: #333;
    color: white;
    padding: 15px;
    position: fixed;
    height: 100%;
}

.sidebar h2 {
    text-align: center;
}

.sidebar ul {
    list-style: none;
    padding: 0;
}

.sidebar ul li {
    margin: 10px 0;
}

.sidebar ul li a {
    color: white;
    text-decoration: none;
}

.main-content {
    margin-left: 220px;
    padding: 20px;
}

.main-content h1 {
    color: #333;
}