body {
  font-family: Arial, sans-serif;
  background-color: #f4f4f4;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 90vh;
  margin: 0;
}

.form-container {
  width: 300px;
  background: #fff;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

h2 {
  margin-bottom: 20px;
  color: #333;
}

form label {
  display: block;
  margin-bottom: 5px;
  color: #555;
}

form input[type="text"],
form input[type="email"],
form input[type="number"] {
  width: calc(100% - 22px);
  padding: 10px;
  margin-bottom: 15px;
  border: 1px solid #ddd;
  border-radius: 4px;
}

form input[type="submit"] {
  background-color: #007BFF;
  color: white;
  border: none;
  padding: 10px 20px;
  border-radius: 4px;
  cursor: pointer;
}

form input[type="submit"]:hover {
  background-color: #0056b3;
}

#result {
  margin-top: 20px;
}