h1 {
  text-align: center;
}
textarea, input {
  display: block;
  margin: 10px auto;
  width: 90%;
  font-size: 18px;
}
button {
  display: block;
  margin: 10px auto;
  padding: 10px;
  font-size: 18px;
  background-color: blue;
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}