#board div.cell {
  display: inline-block;
  width: 3em;
  height: 3em;
  border: 1px solid black;
  text-align: center;
  user-select: none;
  font-size: 14pt;
  font-weight: bold;
  font-family: monospace;
}
#status {
  font-size: 2em;
  font-weight: bold;
}
#error {
  color: red;
}
input {
  width: 4em;
  margin-right: 2em;
}
button {
  margin-right: 2em;
}
#cheat_button.cheated {
  background-color: #800;
  color: white;
}