body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
}

.container {
    max-width: 600px;
    margin: 50px auto;
    text-align: center;
}

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

ul li {
    margin-bottom: 10px;
}

a {
    text-decoration: none;
    color: #3498db;
    font-weight: bold;
    display: block;
    padding: 10px;
    border: 1px solid #3498db;
    border-radius: 5px;
    transition: background-color 0.3s ease;
}

a:hover {
    background-color: #3498db;
    color: #fff;
}