form {
    max-width: 500px;
    margin: 0 auto;
    padding: 20px;
    margin-top: 20px;
    border: 1px solid #ccc;
    border-radius: 5px;
  }

  #btnBack {
    font-size: 16px;
    font-weight: bold;
    padding: 10px;
    border-radius: 5px;
    border: none;
    margin-top: 20px;
    cursor: pointer;
  }
  
  label {
    display: block;
    margin-bottom: 5px;
  }
  
  input[type="text"],
  input[type="email"],
  input[type="number"],
  input[type="password"] {
    display: block;
    width: 100%;
    padding: 20px;
    margin-bottom: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
  }
  
  button[type="submit"] {
    display: block;
    background-color: #3490dc;
    color: #fff;
    font-size: 16px;
    font-weight: bold;
    padding: 10px;
    border-radius: 5px;
    border: none;
    cursor: pointer;
  }
  
  button[type="submit"]:hover {
    background-color: #2779bd;
  }