body {
  text-align: center;
}

#board {
  width: 403px;
  height: 403px;
  border: 3px solid purple;

  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
}

#board img {
  width: 79px;
  height: 79px;
  border: 0.5px solid lightblue;
}

#pieces {
  width: 1041.5px;
  height: 160px;
  border: 2px solid purple;

  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
}

#pieces img {
  width: 78.5px;
  height: 78.5px;
  border: 0.5px solid lightblue;
}