.botoes {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  padding: 10px;
}

button {
  height: 50px;
  font-size: 1.2rem;
  cursor: pointer;
  border-radius: 5px;
  border: 1px solid #ccc;
  background-color: #f9f9f9;
}

button:hover {
  background-color: #e0e0e0;
}

.calculadora {
  background-color: 3d4144;
  padding: 25px;
  border-radius: 8px;
  width: 340px;
  margin: 50px auto;
  box-shadow: 10px 10px 0px #1a1a1a;
  border: 3px solid #111;
}

#display {
  width: 100%;
  height: 80px;
  background-color: #d1d8bd;
  font-family: "courier new", monospace;
  font-size: 2.5rem;
  text-align: right;
  padding: 10px;
  margin-bottom: 25px;
  border: 4px inset #888;
  box-sizing: border-box;
}

.botoes {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

button {
  height: 55px;
  background-color: #1c1c1c;
  color: white;
  font-weight: bold;
  font-size: 1.1rem;
  border: 1px solid #000;
  border-bottom: 4px solid #000;
  border-radius: 4px;
  cursor: pointer;
}

button:active {
  border-bottom: 1px solid #000;
  transform: translateY(3px);
}

.especial {
  background-color: #444;
}