calculator.css

*{
    margin: 0;
    padding: 0;
    font-family:Arial, Helvetica, sans-serif;
    box-sizing: border-box;
}
#CalculatorHeading{
    font-size: 50px;
    display: flex;
    justify-content: center;
    color: #0080fe;
}
.container{
    width: 100%;
    height: 100vh;
    background: white;
    display: flex;
    align-items: center;
    justify-content: center;
}
.calculator{
    background: white;
    padding: 20px;
    border-radius: 30px;
    border: 2px solid #0f52ba;
}
.calculator form input{
    border: 0;
    outline: 0;
    width: 60px;
    height: 60px;
    border-radius: 10px;
    background: transparent;
    font-size: 20px;
    cursor: pointer;
    margin: 10px;
    color: #73c2fb;
    border: 1px solid #90cfef;
}
form .display{
    display: flex;
    justify-content: flex-end;
    margin: 20px 0;
}
form .display input{
    text-align: right;
    flex: 1;
    font-size: 45px;
    box-shadow: none;
}
form input.equal{
    width: 145px;
}