* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  /*   border: 1px solid red; */
}

.container {
  height: 100vh;
  background-color: #fff;
  display: flex;
  justify-content: center;
  align-items: center;
}

.box {
  width: 340px;
  height: 640px;
  background-color: #000;
  display: flex;
  flex-direction: column;
  justify-content: center;
  border-radius: 52px;
  box-shadow: rgba(0, 0, 0, 0.3) 0px 19px 38px,
    rgba(0, 0, 0, 0.22) 0px 15px 12px;
}

.display {
  font-family: "Inconsolata", monospace;
  height: 80px;
  text-align: right;
  margin: 3.8rem 2.5rem 2rem 0;
  font-size: 4.2rem;
  font-weight: 100;
  color: #fff;
  background-color: #000;
  border: none;
}

.keypad {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.3rem;
  margin: 0 1.5rem;
  font-size: 1.6rem;
  font-weight: bold;
}

.key {
  width: 65px;
  height: 65px;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  color: #fff;
  font-size: 2rem;
}

.black-text {
  color: #000;
}

.double {
  width: 140px;
  border-radius: 32px;
  text-align: left;
  padding-left: 1.5rem;
  font-size: 2rem;
}

.orange {
  background-color: #ffa500;
}

.light-gray {
  background-color: #888;
}

.dark-gray {
  background-color: #333;
}