.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  display: none;
}

.modal-content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: #fff;
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.2);
  text-align: center;
}

.btn-confirm {
  background-color: #4CAF50;
  color: #fff;
  padding: 10px 20px;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}

.btn-confirm:hover {
  background-color: #3e8e41;
}

.game-container {
  width: 300px;
  margin: 40px auto;
  text-align: center;
}

.grid-container {
  display: inline-block;
  border: 1px solid #cccccc;
  touch-action: none;
  overscroll-behavior: contain;
}

.grid-row {
  display: flex;
}

.grid-cell {
  width: 75px;
  height: 75px;
  border: 1px solid #cccccc;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 18px;
}

.score-board {
  display: flex;
  flex-direction: row-reverse;
}