@import url('https://fonts.cdnfonts.com/css/calculator?styles=116340');

* {
  font-family: 'Calculator', sans-serif;;
  font-size: 20px;
  color: white;
  box-sizing: border-box;
  font-weight: bold;
  background-color: black;
}

h1 {
  font-size: 30px;
  background-color: orange;
  text-align: center;
  width: 300px;
  margin: 40px auto 30px;
  padding: 10px 0;
}

.container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  max-width: 400px;
  margin: auto;
  gap: 10px;
  padding: 50px 50px 30px;
  border: 3px solid orange;
  background-color: black;
}

.row {
  display: flex;
  gap: 10px;
}

.row button {
  width: 60px;
  height: 60px;
  background-color: orange;
  border-radius: 30px;
  border: none;
  cursor: pointer;
}

.row button:hover {
  background-color: rgb(237, 177, 67);
  width: 70px;
  height: 70px;
  font-size: 30px;
  border-radius: 35px;
  cursor: pointer;
}

.display {
  color: black;
  margin-bottom: 20px;
  font-size: 60px;
  width: 340px;
  height: 70px;
  overflow-x: hidden;
  background-color: gray;
  text-align: right;
}