@import url("https://fonts.googleapis.com/css2?family=Poppins&display=swap");
* {
  margin: 0;
  padding: 0;
  font-family: 'Poppins',sans-serif;
  box-sizing: border-box;
}
.container{
  width: 100%;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color:#191825ef;
}
.calculator{
  background-color:#3F2E3E;
  padding: 20px;
  border-radius: 10px;
  box-shadow: rgba(17, 17, 26, 0.1) 0px 4px 16px, rgba(17, 17, 26, 0.1) 0px 8px 24px, rgba(17, 17, 26, 0.1) 0px 16px 56px;
}
h1{
  display: flex;
  justify-content: center;
  color: #FAF3F0;
}
.calculator button,input{
  border: 0;
  outline: 0;
  width: 60px;
  height: 60px;
  border-radius: 10px;
  background: transparent;
  font-size: 20px;
  color: #FAF3F0;
  box-shadow: rgba(0, 0, 0, 0.25) 0px 14px 28px, rgba(0, 0, 0, 0.22) 0px 10px 10px;;
  cursor: pointer;
  margin: 10px;
}
 .display{
  display: flex;
  justify-content: flex-end;
  margin: 20px 0;
}
 .display input{
  text-align: right;
  flex: 1;
  font-size: 45px;
  box-shadow: none;
}
@media screen and (max-width: 400px) {
  .calculator button,input{
    width: 55px;
    height: 55px;
  }
}