.buttonStyle {
  width: 50px;
  height: 50px;
  font-weight: bold;
  font-size: 1em; 
  margin-bottom: 0.4em;
  margin-right: 0.2em;
}

#calculatorOutput {
  border: 1px solid #000000;
  text-align: right;
  padding: 0.3em;
  height: 1em;
}

.calcDiv {
  display: inline-block;
  border: 1px solid #000000;
  padding: 1em;
  width: auto;
  height: auto;
  margin-left: 4em;
  margin-top: 1em;
  background-color: #ffffff;
}