body {
  font-family: Arial, sans-serif;
  background: #111;
  color: #eee;
  text-align: center;
  padding: 20px;
}
h1 {
  color: #0f0;
}
#board {
  border: 2px solid #444;
  margin: 20px auto;
  padding: 20px;
  width: 300px;
  height: 300px;
  position: relative;
}
.token {
  font-size: 24px;
  position: absolute;
}
.btns button, button {
  margin: 5px;
  padding: 10px 20px;
}