body{
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: #f4f4f4;
    font-family: Arial, Helvetica, sans-serif;
}

.calculator{
    width: 250px;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 0 10px;(rgb(0, 0, 0.1));
    padding: 20px;
}

#display{
    width: 230px;
    height: 50px;
    margin-bottom: 20px;
    font-size: 24px;
    text-align: right;
    padding: 10px;
    border-radius: 5px;
}

.button{
    display: grid;
    
}