static/css/style.css

body {
  font-family: sans-serif;
  padding: 20px;
}
#board {
  width: 500px;
  height: 500px;
  margin-bottom: 20px;
}
#moves {
  width: 500px;
  height: 300px;
  white-space: pre-wrap;
  padding: 10px;
  border: 1px solid #ccc;
  font-family: monospace;
  resize: none;
}