.calc{
    width: 360px;
    height: 570px;
    background-color: gray;
    padding: 30px;
}
#display{
    width: 100%;
    height: 60px;
    pointer-events: none;
}
.buttons{
    padding-top: 30px;
    width: 330px;
    height: 420px;
    
}
.row{
    width: 330px;
    margin-top: 30px;
    
}
.btn{
margin-right: 19.5px;
  width: 60px;
  height: 60px;
}