body {
  background-color: indianred;
  margin:0;
}
img {
  display:none;
}
#game {
  overflow: hidden;
  width:1024px;;
  height:768px;
  margin:0 auto;
  position:relative;
  border:1px solid lime;
  background-color: lightgrey;
}
.shadow {
  filter:drop-shadow(5px 5px 5px black);
}
.highlight {
  filter:invert(90%);
}
.done {
  filter:sepia(200%);
}
span {
  color:white;
  font-size:40px;
  background-color: lime;
  margin:5px;
}
#report {
  padding: 5px;
  font-size: 30px;
  color:white;
}