body {
  display: flex;
  justify-content: center;
}

#calcBox {
  padding: 5rem .5rem .5rem;
  border-radius: 1rem 1rem .25rem .25rem;
  background-image: linear-gradient(to bottom,
                                    hsl(44, 33.3%, 62.9%) 12%,
                                    hsl(44, 50%, 70%) 17%);
}

#calculator {
  display: grid;
  grid-template-columns: 3rem 3rem 3rem 3rem;
  grid-template-rows: auto auto auto auto auto auto auto;
  grid-gap: .75rem;
  padding: 1rem;
  background-color: black;
  border-radius: 1rem 1rem 0 0;
}

#display {
  grid-column: 1 / 5;
  grid-row: 1 / 2;
  border: 1px solid black;
  height: 3rem;
  color: red;
  font-family: monospace;
  font-size: 1.5rem;
  text-align: right;
  letter-spacing: .25rem;
}

#label {
  grid-column: 1 / 5;
  grid-row: 2 / 3;
  height: 2.1rem;
  margin-right: .2rem;
  color: white;
  text-align: right;
  font-family: sans-serif;
  font-weight: bold;
}

img {
  height: 1.5rem;
  margin-left: 2rem;
  float: left;
}

button {
  height: 2.5rem;
  font-weight: bold;
  font-size: 1.25rem;
  background-color: hsl(44, 33.3%, 62.9%);
  border-color: hsl(44, 33.3%, 72.9%);
}

#bottom {
  display: flex;
  grid-column: 1 / 5;
  grid-row: 7 / 8;
}

#bottom > button:first-child {
  flex-grow: 1.25;
}

#bottom > button:nth-child(2) {
  width: 3rem;
  margin: 0 .75rem;
}

#bottom > button:last-child {
  flex-grow: 1.25;
  background-color: hsl(24, 94%, 50%);
  border-color: hsl(24, 94%, 60%);
}

.white {
  background-color: white;
  border-color: white;
}