style.css

body {
  margin-top: 100px;
  font-family: Arial, sans-serif;
  text-align: center;
  background-color: #b0e0e6; /* Baby blue */
}

h1 {
  margin: 20px;
  color: #555;
}

.game-board {
  display: grid;
  grid-template-columns: repeat(3, 100px);
  grid-gap: 5px;
  margin: 0 auto;
  max-width: 315px;
  border: 5px solid #ccc;
  border-radius: 10px;
  background-color: #fff;
  box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.2);
}

.cell {
  width: 100px;
  height: 100px;
  background-color: #f1c40f; /* bright yellow */
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 40px;
  cursor: pointer;
  border-radius: 10px;
  transition: background-color 0.2s ease-in-out, transform 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
}

.cell:hover {
  background-color: transparent; /* Set the background to transparent for the sparkles effect */
  transform: scale(.9) rotateZ(360deg); /* Apply scale and rotation for the sparkles */
  box-shadow: 0px 0px 20px rgba(255, 255, 255, 0.9), 0px 0px 30px rgba(255, 255, 255, 0.7), 0px 0px 40px rgba(255, 255, 255, 0.5);
}

/* Add animation to indicate cell selection */
.cell.selected {
  animation: pulse 0.5s infinite;
}

@keyframes pulse {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.1);
  }
  100% {
    transform: scale(1);
  }
}