.text-sheet {
  width: 800px;
  height: 600px;
  border: 1px solid #ccc;
  padding: 20px;
  font-family: monospace;
}

.drop-zone {
  width: 100%;
  height: 200px;
  border: 1px solid #ccc;
  border-radius: 5px;
  padding: 20px;
  background-color: #f9f9f9;
}

.drop-zone h2 {
  margin-top: 0;
}

.html-output {
  margin-top: 20px;
  padding: 20px;
  border: 1px solid #ccc;
  border-radius: 5px;
  background-color: #f9f9f9;
}

pre#html-output {
  white-space: pre-wrap;
  word-wrap: break-word;
}