body {
  display: flex;
  height: 100vh;
  justify-content: center;
  align-items: center;
  background: #8538e3;
  font-family: Arial, sans-serif;
}

.calculator {
  background: #fff;
  padding: 20px;
  border-radius: 15px;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
  width: 300px;
}

#result {
  width:93%;
  height: 100px;
  font-size: 24px;
  text-align: right;
  padding: 10px;
  margin-bottom: 15px;
  border: 1px solid #ccc;
  border-radius: 10px;
}

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

button {
  padding: 20px;
  font-size: 15px;
  border: none;
  border-radius: 10px;
  background-color: #f2f2f2;
  cursor: pointer;
  transition: background-color 0.2s;
}

button:hover {
  background-color: #da2525;
}

.operator {
  background-color: #ffce54;
}

.equal {
  background-color: #5cb85c;
  color: white;
}

.clear {
  background-color: #d9534f;
  color: white;
  grid-column: span 2;
}

.del {
  background-color: #d9534f;
  color: white;
  grid-column: span 2;
}