html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
}
canvas {
  display: block;
}
textarea {
  position: fixed;
  top: 0;
  left: 0;
  width: 200%;
  height: 100%;
  background: transparent;
  border: none;
  outline: none;
  resize: none;
   
  font-family: monospace;
  font-size: 16px;
  color: #22ee22;
  overflow-y: scroll;
}