body {
    margin: 0;
    padding: 0;
    font-family: Arial, Helvetica, sans-serif;
    background-color: #f4f6f8;
}

.container {
    max-width: 600px;
    margin: 80px auto;
    background-color: #ffffff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
}

h1 {
    margin-top: 0;
    font-size: 22px;
    text-align: center;
}

.site-list {
    list-style: none;
    padding: 0;
    margin: 30px 0;
}

.site-list li {
    margin: 15px 0;
}

.site-list a {
    display: block;
    padding: 12px 15px;
    text-decoration: none;
    background-color: #0073e6;
    color: #ffffff;
    border-radius: 5px;
    text-align: center;
    transition: background-color 0.2s ease-in-out;
}

.site-list a:hover {
    background-color: #005bb5;
}

.footer {
    text-align: center;
    font-size: 13px;
    color: #666666;
    margin-top: 20px;
}