body {
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-family: "Trebuchet MS", Helvetica, sans-serif;
  font-size: 24px;
  letter-spacing: -1px;
  word-spacing: -0.6px;
  color: #505739;
  font-weight: 700;
  text-decoration: none;
  font-style: normal;
  font-variant: normal;
  text-transform: uppercase;
}
.calculator-body {
  background-color: #eae0c2;
  padding: 0 1rem 1rem 1rem;
  margin: 1rem;
  border-radius: 0.8rem;
}

.calculator-body > h1 {
  font-size: 2rem;
  text-align: left;
  padding: 0.4rem 0;
  margin: 0;
}

.display {
  text-align: end;
  border-radius: 4px;
  padding: 0.9rem;
  height: 1rem;
  width: 15rem;
  background-color: #ffffffcc;
}

[class^="calc-button"] {
  box-shadow: 0px 1px 0px 0px #bdbcbc;
  background: linear-gradient(to bottom, #eae0c2 5%, #ccc2a6 100%);
  background-color: #eae0c2;
  border-radius: 15px;
  border: 2px none #333029;
  display: inline-block;
  cursor: pointer;
  color: #505739;
  font-family: Arial;
  font-size: 14px;
  font-weight: bold;
  padding: 12px 16px;
  text-decoration: none;
  text-shadow: 0px 1px 0px #ffffff;
  padding: 1rem;
  margin: 0.3rem 0;
  width: 4rem;
  height: 4rem;
  text-align: center;
}
[class^="calc-button"]:hover {
  background: linear-gradient(to bottom, #ccc2a6 5%, #eae0c2 100%);
  background-color: #ccc2a6;
}
[class^="calc-button"]:active {
  position: relative;
  top: 1px;
}

.O {
  width: 8.2rem;
  margin-right: 0.3rem;
}