.game_board{
    max-width: 100%;
    margin: 0 auto;
    display: flex;
    align-items: center;
    flex-direction: column;
    justify-content: center;
}

.grid {
  display: grid;
  grid-template-columns: repeat(9, 11%);
  justify-content: center;
  margin: 20px auto;
  width: 100%;
}
.grid input{
   width: 86%;
    height: 86%;
        aspect-ratio: 1 / 1;
    border: 1px solid #34495e;
    text-align: center;
    font-size: clamp(14px, 4vw, 20px);
    text-transform: uppercase;
    outline: none;
    background: white;
}
.grid input:disabled {
  background-color: #34495e;
  color: #fff;
  border: 1px solid #fff;
  cursor: not-allowed;
}
.cell {
  width: 40px;
  height: 40px;
  text-align: center;
  font-size: 18px;
  border: 1px solid #000;
  outline: none;
}

.fixed {
  background: #485460;
  color: #fff;
  font-weight: bold;
}

.sudoku-body button {
  margin: 10px;
  padding: 10px 20px;
  border-radius: 6px;
  border: none;
  cursor: pointer;
}

.rules-box {
  width: 300px;
  margin: 20px auto;
  padding: 15px;
  background: #2f3640;
  border-radius: 10px;
  display: none;
  text-align: left;
}

.rules-box h3 {
  margin-top: 0;
  color: #00a8ff;
}

.buttons{
  margin:20px auto;
  display: flex;
  gap:10px;
  justify-content:center;
}
button {
  margin: 10px;
  padding: 10px 20px;
  border-radius: 6px;
  border: none;
  cursor: pointer;
}