body
{
  background-color: black;
}
h1
{
  color:gray;
}
#result
{
  background-color:white;
}
#container
{
  position:fixed;
  top:50%;
  left:50%;
  transform:translate(-50%, -50%);
  background-color:red;
  border-radius:5%;
  padding:20px;
  
}