*{
  margin: 0px;
  padding: 0px;
  box-sizing: border-box;
}
body{
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 100vh;
  display: flex;
  /*
  background: powderblue;*/
}
.calculator{
  border: 1px solid #717377;
  padding: 20px;
  border-radius: 16px;
  background: transparent;
  box-shadow: 0px 2px 10px rgba(91, 107, 141, 0.5);
}
input{
  width: 320px;
  background: transparent;
  box-shadow: 0px 2px 10px rgba(11, 10, 10, 0.1);
  font-size: 40px;
  text-align: right;
  color: black;
  cursor: pointer;
  border: none;
  padding: 24px;
  margin: 10px;
  
}
input::placeholder{
  color: black;
}
button{
  border-radius: 50%;
  background: transparent;
  color: black;
  font-size: 20px;
  box-shadow: -5px -5px 15px black;
  border: none;
  cursor: pointer;
  width: 60px;
  height: 60px;
  margin: 10px;
  
}