body {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100vh;
  color: white;
  background-color: black;
  margin: 0;
}

h1 {
  margin: 0;
  padding-block: 10vh;
  font-size: 5vh;
}

img {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}