body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 20px;
    background-color: #f0f0f0;
    display: flex;
    justify-content: center;
}
.container {
    max-width: 600px; /* 限制最大宽度 */
    width: 100%;
}
h1 {
    color: #333;
}
ul {
    list-style: none;
    padding: 0;
}
li {
    margin-bottom: 10px;
}
a {
    text-decoration: none;
    color: #007BFF;
    padding: 10px;
    background-color: white;
    display: block;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}
a:hover {
    background-color: #f9f9f9;
}
@media (max-width: 600px) {
    body, .container {
        padding: 10px;
    }
    a {
        padding: 8px;
    }
}