body
{
  background-color: navy;
}

h1 {
 color: maroon; 
}

#result {
  background-color: white;
}

#container {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: goldenrod;
  border-radius: 12px;
  border: 6px solid black;  
  padding: 20px;
}