* {
  margin: 0;
  padding: 0;
}

body {
  display: flex;
  justify-content: center;
  align-items: center;
  font-family: sans-serif;
  text-align: center;
  background: #f0f0f0;
  padding: 20px;
  height: 100vh;
  overflow: hidden;
}

#game {
  display: grid;
  grid-template-columns: repeat(10, 40px);
  justify-content: center;
  gap: 2px;
  margin-top: 20px;
}

#reset-button {
  margin: 30px;
  padding: 10px 20px;
  font-size: 16px;
  cursor: pointer;
}

.cell {
  width: 40px;
  height: 40px;
  background-color: #ccc;
  border: 1px solid #999;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  cursor: pointer;
  user-select: none;
}

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

.cell.flagged {
  background-color: #ffecb3;
}