body {
  font-family: Arial, sans-serif;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
  background-color: #ffffff;
}
.calculator {
  background-color: #1a1a1a; /* Darker shade of black */
  border-radius: 10px;
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.3);
  padding: 20px;
  width: 280px;
}
#display {
  width: 100%;
  height: 60px;
  font-size: 30px;
  text-align: right;
  margin-bottom: 20px;
  padding: 10px;
  box-sizing: border-box;
  border: none;
  background-color: #ffffff;
  color: #000000;
  border-radius: 5px;
}
.buttons {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 15px;
}
button {
  width: 100%;
  height: 60px;
  font-size: 24px;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  transition: background-color 0.3s, transform 0.1s;
}
button:hover {
  transform: scale(0.95);
}
.operator {
  background-color: #ffcc00;
}
.operator:hover {
  background-color: #ffdb4d;
}
.equals {
  background-color: #ff3300;
  grid-column: span 1;
}
.equals:hover {
  background-color: #ff5c33;
}
.function {
  background-color: #ffcc00;
}
.function:hover {
  background-color: #ffdb4d;
}
.number {
  background-color: #333333; /* Lighter shade of black */
  color: #ffffff;
}
.number:hover {
  background-color: #4d4d4d; /* Even lighter shade of black */
}