body {
  background-color: #5EABD6;
  font-family: sans-serif;
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.container {
  background: #FEFBC7;
  border: 3px solid #000;
  border-radius: 15px;
  padding: 40px 120px;
  text-align: center;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
}

h1, h2 {
  margin: 10px 0;
}

.display {
  font-size: 48px;
  font-weight: bold;
  margin: 20px 0;
  user-select: none;
}

.buttons button {
  padding: 10px 20px;
  margin: 10px;
  font-size: 16px;
  border: none;
  border-radius: 5px;
  background-color: #FFB4B4;
  cursor: pointer;
  transition: background-color 0.2s ease;
  user-select: none;
}

.buttons button:hover {
  background-color: #ffdd3c;
}