body {
    margin: 0;
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.container {
    width: 90%;
    max-width: 600px;
    background: #fff;
    padding: 20px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    border-radius: 8px;
}

h1 {
    text-align: center;
    color: #333;
    margin-bottom: 20px;
}

ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

ul li {
    margin: 10px 0;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    transition: 0.3s;
    text-align: center;
}

ul li a {
    text-decoration: none;
    color: #007bff;
    font-weight: bold;
}

ul li:hover {
    background-color: #f0f0f0;
}

ul li a:hover {
    color: #0056b3;
}