body {
  position: absolute;
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  overflow: hidden; }

#debug {
  position: absolute;
  top: 0;
  left: 0;
  margin: 0;
  padding: 20px;
  color: white;
  font-family: helvetica;
  user-select: none;
  -webkit-user-select: none;
  cursor: default; }