main7.css

html,
body,
#viewDiv {
  padding: 0;
  margin: 0;
  height: 100%;
  width: 100%;
}
#instructionsDiv {
  position: absolute;
  top: 18px;
  right: 18px;
  padding: 12px;
  background-color: rgba(0, 0, 0, 0.5);
  color: white;
  width: 200px;
}