*, *::before, *::after {
  box-sizing: border-box;
  font-family: "Pangolin", cursive;
  font-weight: normal;
}

body {
  padding: 0;
  margin: 0;
  background-color: #234452;
}
.div1{
  display: block;
  margin-left: auto;
  margin-right: auto;
  width: 90px;
  margin-bottom: -100px;
  padding-top: 10px;
}
.calculator-grid {
  display: grid;
  justify-content: center;
  align-content: center;
  min-height: 100vh;
  grid-template-columns: repeat(4, 100px);
  grid-template-rows: minmax(120px, auto) repeat(5, 100px); 
}
.calculator-grid > button {
  cursor: pointer;
  font-size: 2rem;
  border: 2px solid black;
  outline: 2px solid black;
  background-color: #2A9D8F;
  color:#141414;
}

.calculator-grid > button:hover {
  background-color: #E9C46A;
}

.span-two {
  grid-column: span 2;
}

.output {
  grid-column: 1 / -1;
  display: flex;
  align-items: flex-end;
  justify-content: space-around;
  flex-direction: column;
  padding: 10px;
  word-wrap: break-word;
  word-break: break-all;
}

.output .previous-operand {
  color: rgba(255, 255, 255, .75);
  font-size: 2rem;
}
.output .current-operand {
  color: white;
  font-size: 2rem;
}