body {
  margin: 0;
  background-color: black;
}

textarea {
  font-size: 20px;
  font-family: monospace;
  margin: 0;
  resize: none;
  width: 100%;
}

.commandLineDiv, .outputDiv{
  width: 95%;
  margin: 1em auto;
}

#output {
  height: 25em;
}