body {
  font-family: Arial, Helvetica, sans-serif;
  text-align: center;
  color: green;
}

#title {
  height: 150px;
  width: 400px;
}

#board {
  width: 354px;
  height: 354px;
  background-color: lightgreen;
  border: 10px solid darkgreen;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
}

#board div {
  width: 118px;
  height: 118px;
  border: 1px solid darkgreen;
  box-sizing: border-box;
  cursor: grab;
}