style.css

@charset "UTF-8";

* {
  font-family: Arial, Helvetica, sans-serif;
  font-weight: bold;
  font-size: 1.2rem;
  color: #3f413d;
  margin: 0;
  padding: 0;
}

.container {
  background-image: linear-gradient(to left, #ff6662, #f98062, #ff9065);
  height: 100vh;
  background-size: cover;
  display: flex;
  justify-content: center;
  align-items: center;
}

.calculator{
  background-color: #eae4d3;
  padding: 3vh 3vh 3vh 3vh;
  border-radius: 1rem;
  box-shadow: 0 10px 10px 0 #d35652;
}

#display {
  background-color: #fdf8fd;
  padding: 15px;
  border-radius: 0.5rem;
  text-align: right;
  height: 5vh;
  margin: 0.5rem;
}

.calculatorButtons{
  width: 4rem;
  height: 3rem;
  border: none;
  margin: 0.3rem;
  border-radius: 0.5rem;
  background-color: #fef9ff;
  box-shadow: 0 4px #cac5b6;
  text-align: center;
}

.calculatorButtons:active {
  transform: translateY(0.1vh);
  box-shadow: 0 2px #cac5b6;
}

#cleanDisplay, #deleteDigit, #division, #multiplication, #subtraction, #sum, #result{
  background-color: #928686;
  color: #fdfffc;
}

#result{
  height: 6.8rem;
}

#num0{
  width: 8.7rem;
}