body{
	background-color: cyan;
}
h1 {
  color: darkblue;
}
#result {
  background-color: white;
}
#container {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: lightgreen;
  border-radius: 1em;
  padding: 20px;
}