body {
  font-family: Arial;
  padding: 20px;
}

button {
  margin: 4px;
  padding: 6px 12px;
  cursor: pointer;
}

.controls button {
  font-size: 12px;
}

#fileButtons {
  max-height: 150px;
  overflow-y: scroll;
  border: 1px solid #ccc;
  padding: 10px;
}


#textBox {
  margin-top: 20px;
  border: 1px solid #aaa;
  padding: 15px;
  height: 220px;
  overflow-y: auto;
  white-space: pre-wrap;
  background: #f9f9f9;
  font-size: 18px;
}