body{
    margin: 0;
    padding: 0;
  background-repeat: no-repeat;
  background-position: center;
  background-size: cover;
  height: 100vh;
  color: #333;
    text-align: center;
}
h1 {
font-size: 30px;
}
.calculator {
 
    margin: 0 auto;
    padding: 20px;
   /* border: 1px solid #ccc;*/
    border-radius: 2px;
   /* background-color: #f5f5f5;*/
}

.calculator input[type="text"] {
    width: 80px;
    height: 60px;
    margin: 20px;
    font-size: 20px;
    border-radius: 55px;
    background-color: white;
    color:white;
    border-style: none;
}

.calculator button {
    width: 50px;
    height: 50px;
    margin: 5px;
    font-size: 20px;
    cursor: pointer;
}

/*.calculator button.operator {
    background-color: #f39c12;
    color: #fff;
}*/
.calculator button:hover{
    background-color: yellow;
    cursor: pointer;
}
function calculateResult

{
    background-color: #f5f5f5;
   
}