body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #f3f3f3;
}

.container {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 220px;
    background: #222;
    color: #fff;
    padding: 20px;
}

.sidebar h2 {
    text-align: center;
}

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

.sidebar ul li {
    margin: 15px 0;
}

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

.sidebar ul li a:hover {
    text-decoration: underline;
}

.content {
    flex: 1;
    padding: 20px;
    background: white;
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        flex-direction: column;
    }
    .sidebar {
        width: 100%;
        text-align: center;
    }
}