body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: #f4f4f4;
    color: #333;
    text-align: center;
}

header {
    background: #333;
    color: #fff;
    padding: 20px 0;
}

header .container {
    width: 80%;
    margin: 0 auto;
}

.container {
    width: 80%;
    margin: 20px auto;
}

h1, h2 {
    margin: 0 0 10px;
    padding: 0;
}

p, pre {
    margin: 0 0 20px;
    white-space: pre-wrap; /* 保持诗歌形式 */
}

pre {
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

footer {
    background: #333;
    color: #fff;
    text-align: center;
    padding: 10px 0;
    position: fixed;
    bottom: 0;
    width: 100%;
}

.fade-in {
    opacity: 0;
    transition: opacity 1.5s ease-in;
}

.fade-in.visible {
    opacity: 1;
}

.avatar {
    border-radius: 50%;
    width: 150px;
    height: 150px;
    object-fit: cover;
    margin-bottom: 20px;
}