body {
  font-family: sans-serif;
  background: #e8f0f8;
  margin: 20px;
}

h1 {
  text-align: center;
}

#board {
  position: relative;
  width: 800px;
  height: 500px;
  margin: 20px auto;
  background: url('img/IMG_2843.jpeg') no-repeat center/cover;
}

.field {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  position: absolute;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 10px;
  color: white;
}

.player-marker {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: yellow;
  position: absolute;
}