body {
  background-color: black;
  color: #00ff00;
  font-family: 'Courier New', Courier, monospace;
  padding: 20px;
}
#terminal {
  width: 100%;
  max-width: 800px;
  margin: auto;
}
input {
  background: black;
  color: #00ff00;
  border: none;
  font-size: 1.1em;
  width: 100%;
}