body {
  margin: 0;
  font-family: 'Courier New', Courier, monospace;
  background-color: #000;
  color: #00ff00;
  overflow-x: hidden;
}

header, main, footer {
  padding: 20px;
  text-align: center;
}

.ascii {
  font-size: 12px;
  white-space: pre;
  margin-bottom: 20px;
}

.encrypted-output {
  background-color: rgba(0, 255, 0, 0.05);
  border: 1px solid #00ff00;
  padding: 1em;
  font-size: 0.9em;
  color: #00ff00;
  white-space: pre-wrap;
  text-align: left;
  max-width: 800px;
  margin: 2em auto;
  box-shadow: 0 0 10px #00ff00;
}