body {
  font-family: sans-serif;
  font-size: 50px;
  color: green;
  text-align: center;
}

.calculate {
  display: inline-block;
  position: fixed;
  top: 10%;
  left: 10%;
}

.message {
  color: black;
  padding-left: 25px;
  padding-bottom: 50px;
}

.questionGrid {
  display: grid;
  grid-template-columns: 60px 60px 60px 60px 50px 50px;
  grid-template-rows: 50px;
  margin: 0 auto;
}

.answerGrid {
  display: grid;
  grid-template-columns: 50px 50px 50px 50px;
  grid-template-rows: 50px 50px 50px;
  padding-left: 20%;
}

.answerGrid .zero {
  padding: 50px 0;
  grid-row-start: span 3;
  height: 50px;
}

.square {
  border-style: outset;
  border-radius: 2.5px;
  width: 50px;
  height: 50px;
}

.number:hover {
  color: #fff696;
}

.symbol {
  border-style: none;
}