body {
  background-color: #aca;
  text-align: center;
  color: #335;
  user-select: none;
}

.cell {
  cursor: pointer;
  display: inline-block;
  width: 18%;
  margin: 5px;
  background-color: #eef;
  border-color: #aac;
  border-style: solid;
  border-radius: 15px;
}

.cell:hover {
  background-color: #ccd;
  transform: rotate(-2deg);
}

.cell.win {
background: repeating-linear-gradient(
  45deg,
  #edd,
  #edd 10px,
  #eaa 10px,
  #eaa 20px
);
}

.cell.win:hover {}