body {
    font-family: 'Arial', sans-serif;
    background: url('https://cdn.pixabay.com/photo/2018/07/05/13/53/nebula-3518365_1280.jpg') no-repeat center center fixed;
    background-size: cover;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
  }
  .site-title {
    font-family: 'Dancing Script', cursive; /* 使用手写风格字体 */
    font-size: 40px; /* 增大字体 */
    font-weight: bold;
    color: #410ddb; /* 使用番茄红色 */
    text-align: center;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3); /* 添加阴影效果 */
  }
  .container {
    background: rgba(255, 255, 255, 0.8);
    border-radius: 15px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    width: 350px;
    padding: 20px;
    text-align: center;
  }
  .form-footer button {
    background: none;
    border: none;
    color: #007BFF;
    cursor: pointer;
    font-size: 14px;
  }
  
  .form-footer button:hover {
    text-decoration: underline;
  }

  
  .avatar img {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    border: 2px solid #ddd;
  }
  
  h2 {
    color: #333;
    margin-bottom: 20px;
  }
  
  .form-group {
    margin-bottom: 15px;
  }
  
  .form-group input {
    width: 90%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 14px;
  }
  
  .form-group button {
    background-color: #4CAF50;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
  }
  
  .form-group button:hover {
    background-color: #45a049;
  }
  
  .form-footer {
    margin-top: 20px;
  }
  
  .form-footer p {
    font-size: 14px;
    color: #555;
  }
  
  .form-footer button {
    background: none;
    border: none;
    color: #007BFF;
    cursor: pointer;
    font-size: 14px;
  }
  
  .form-footer button:hover {
    text-decoration: underline;
  }