.demo-page {
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.title {
  font-size: 20px;
  text-align: center;
}

.btn {
  width: 200px;
  height: 40px;
  margin-top: 20px;
  border-radius: 5px;
  background-color: #09ba07;
  font-size: 20px;
  color: #ffffff;
}