body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
  }
  
  .container {
    width: 80%;
    margin: 0 auto;
    padding: 20px;
  }
  
  h1 {
    text-align: center;
  }
  
  form {
    max-width: 500px;
    margin: 0 auto;
    background-color: #fff;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
  }
  
  input[type="number"],
  textarea {
    width: 100%;
    padding: 10px;
    margin: 10px 0;
    border: 1px solid #ccc;
    border-radius: 5px;
  }
  
  button {
    background-color: #4CAF50;
    color: white;
    border: none;
    padding: 10px 20px;
    cursor: pointer;
    border-radius: 5px;
  }
  
  button:hover {
    background-color: #45a049;
  }
  
  .feedback {
    background-color: #fff;
    margin-bottom: 20px;
    padding: 15px;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
  }
  
  .feedback button {
    background-color: red;
    color: white;
  }