body {
  font-family: Arial;
  background: #f4f4f4;
  padding: 40px;
}

form {
  background: white;
  padding: 20px;
  max-width: 400px;
  border-radius: 5px;
}

input, textarea, button {
  width: 100%;
  margin-bottom: 10px;
  padding: 8px;
}