body {
  font-family: Arial, sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-top: 50px;
  background-color: #f0f0f0;
}

#puzzle-container {
  width: 400px;
  height: 400px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: repeat(4, 1fr);
  gap: 1px;
  background-color: #ccc;
  border: 2px solid #333;
  position: relative;
}

.tile {
  width: 100px;
  height: 100px;
  background-image: url('logo.png');
  background-size: 400px 400px;
  box-sizing: border-box;
  border: 1px solid #999;
  cursor: pointer;
  transition: all 0.2s ease;
}