.calculator {
  background-color: #000000;
  max-width: 500px;

}

.calculator-button {
  width: 75px;
  height: 75px;
  border: 0;
  border-radius: 50%;
}

.display-container {
  padding-top: 70px;
}

.display-container input {
  background-color: black;
  border: none;
  padding: 0px 30px 0px 30px;
  font-size: 58px;
}

.custom-background-color-ligt-gray {
  background-color: #5C5C5F;
}

.custom-background-color-dark-liver {
  background-color: #2A2A2C;
}

.custom-background-color-vivid-gamboge {
  background-color: #FF9500;
}