body {
  font-family: Arial, sans-serif;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  background-color: #f0f0f0;
}

#game {
  display: grid;
  grid-template-columns: repeat(10, 40px);
  grid-template-rows: repeat(10, 40px);
  gap: 2px;
}

.cell {
  width: 40px;
  height: 40px;
  background-color: #bbb;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  font-weight: bold;
  font-size: 18px;
  user-select: none;
}

.cell.revealed {
  background-color: #e0e0e0;
  cursor: default;
}

.cell.mine {
  background-color: red;
  color: white;
}

.cell.flag {
  background-color: yellow;
  color: black;
}