body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    margin: 0;
    padding: 20px;
  }
  
  .login-container, .birth-container {
    width: 300px;
    margin: 0 auto;
    padding: 20px;
    background-color: white;
    box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.1);
    border-radius: 5px;
  }
  
  input, button {
    display: block;
    width: 95%;
    margin-bottom: 8px;
    padding: 12px;
    border: 1px solid #ccc;
    border-radius: 3px;
  }
  
  button {
    background-color: #007bff;
    color: white;
    cursor: pointer;
  }
  
  button:hover {
    background-color: #0056b3;
  }