body{
  background-color: rgb(0,0,0);
  font-family: Arial;
  position: relative;
  padding: 20px;
  margin: 0 auto;
}
button{
  background-color: rgb(51,51,51);
  color: white;
  border: none;
  padding: 15px 22.5px ;
  border-radius: 50px;
  font-size: 26px ;
  margin-right: 5px;
  cursor: pointer;
}
.operators{
background-color:rgb(254, 160, 10);
}
.calculation{
  color: white;
  font-size: 45px;
  height: 10px;
  margin-top: 25px;  
}
.clear-button{
  font-size: 17px;
  border-radius: 50px;
  padding: 20px 10px;
}
.operator2{
  padding: 15px 25px;
}