body {
  margin: 0;
  font-family: monospace;
  background: #00ff00;
  user-select: none;
}

#cont {
  max-width: 100vw;
  max-height: 100vh;
  overflow: hidden;
}

.holder {
  background: black;
  color: white;
  position: fixed;
  top: 0;
  left: 0;
  padding: 2px 6px;
}

.viewer {
  color: #00ff00;
  font-weight: bold;
  z-index: 100;
}