body {
  font-family: Arial, sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100vh;
  margin: 0;
  background-color: #f0f0f0;
}

h1 {
  margin-bottom: 20px;
}

.score-container {
  font-size: 24px;
  margin-bottom: 20px;
}

.game-container {
  display: grid;
  grid-template-columns: repeat(4, 100px);
  grid-gap: 10px;
  margin-bottom: 20px;
}

.card {
  width: 100px;
  height: 100px;
  background-color: #ffffff;
  border: 2px solid #cccccc;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  position: relative;
  transform: scale(1);
  transition: transform 0.2s, background-color 0.5s;
}

.card:hover {
  transform: scale(1.05);
}

.card .shape {
  display: none;
  width: 60px;
  height: 60px;
}

.card.revealed {
  background-color: #f9f9f9;
}

.card.revealed .shape {
  display: block;
}

#reset-button {
  padding: 10px 20px;
  font-size: 16px;
  cursor: pointer;
  background-color: #007BFF;
  color: white;
  border: none;
  border-radius: 5px;
  transition: background-color 0.3s;
}

#reset-button:hover {
  background-color: #0056b3;
}

/* Shape styles */
.shape.circle {
  background-color: red;
  border-radius: 50%;
}

.shape.square {
  background-color: blue;
}

.shape.triangle {
  width: 0;
  height: 0;
  border-left: 30px solid transparent;
  border-right: 30px solid transparent;
  border-bottom: 60px solid green;
}

.shape.star {
  width: 0;
  height: 0;
  border-left: 30px solid transparent;
  border-right: 30px solid transparent;
  border-bottom: 60px solid yellow;
  position: relative;
  top: -15px;
}