h1 {color:pink;}
h2 {color:pink;}
h1 {
  text-align: center;
}
h2 {
  text-align: center;
}
body {
  height: 100vh;
  background-image: url("https://dynamic-media-cdn.tripadvisor.com/media/photo-o/29/cf/40/a7/sunrise-at-5am-in-summer.jpg?w=1100&h=-1&s=1");
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center;
}

button {
  display: block;
  margin: auto;
}