.calculator {
  border: 2px solid gray;
  border-radius: 5px;
  width: 225px;
}

.calc-button {
  width: 52px;
  height: 52px;
}

#launch {
  background-color: #FF0000;
}
.operator {
  padding-top: 40px;
  padding-bottom: 40px;
  padding-right: 40px;
  padding-left: 40px;
}

.output {
  width: 217px;
  height: 40px;
  text-align: right;
}