calculator.css

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
}

.calc {
  width: 400px;
  background-color: black;
  color: white;
}

.screen {
  font-size: 40px;
  font-family: "Courier New", Courier, monospace;
  text-align: right;
  padding: 20px 5px;
}

.cal-button {
  background-color: #cfd4dd;
  color: black;
  height: 100px;
  width: 24.5%;
  border: none;
  border-radius: 0;
  font-size: 40px;
  cursor: pointer;
}

.cal-button:hover {
  background-color: #ffffffec;
}

.cal-button:last-child {
  background-color: rgb(236, 159, 15);
  color: white;
}

.cal-button:last-child:hover {
  background-color: rgb(247, 196, 101);
  color: black;
}

.double {
  width: 49.7%;
}

.triple {
  width: 74.8%;
}

.cal-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.5%;
}