html {
  height: 100%;
  width: 100%;
  font-family: sans-serif;

  flex-direction: column;
  align-items: center ;
  justify-content: center;

  background-color: lightgreen;

  padding: 20px;
  
}

h1 {
  background-color: #c3fed2;
  width: fit-content;

  padding: 10px;
  color: rgb(0, 107, 12);
}