styles.css

body {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
  font-family: sans-serif;
  min-height: 100%;
}

.calculator {
  background-color: #fadde7;
  border-radius: 30px;
  padding: 32px;
  width: 300px;
}

.display {
  background-color: #fbc2d5;
  border-radius: 10px;
  box-shadow: inset 0 0 10px rgba(237, 147, 192, 0.2);
  font-size: 2em;
  height: 50px;
  line-height: 50px;
  margin-bottom: 20px;
  padding: 0 10px;
  text-align: right;
}

.buttons {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 9px;
}

.button {
  background-color: #febad2;
  border: none;
  border-radius: 50%;
  box-shadow: 0 4px #f297bb;
  color: #494848;
  margin: 1px;
  font-size: 1.5em;
  height: 60px;
  width: 60px;
  text-align: center;
  line-height: 60px;
}

.buttonp {
  background-color: #faf4f6;
  border: none;
  border-radius: 50%;
  box-shadow: 0 4px #f9c8dc;
  color: #494848;
  margin: 1px;
  font-size: 1.5em;
  height: 60px;
  width: 60px;
  text-align: center;
  line-height: 60px;
}

.buttonq {
  background-color: #fa7ea7;
  border: none;
  border-radius: 50%;
  box-shadow: 0 4px #f75898;
  color: #494848;
  margin: 1px;
  font-size: 1.5em;
  height: 60px;
  width: 60px;
  text-align: center;
  line-height: 60px;
}

h3 {
  color: #b13166ef;
}

.button:active {
  transform: translateY(2px);
}

.buttonp:active {
  transform: translateY(2px);
}

.buttonq:active {
  transform: translateY(2px);
}