*,
*::before,
*::after{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

.calculator{
    width: 300px;
    margin: auto;
    background-color: tan;
    padding: 9px;
    margin: auto;

}

.display{
    background-color: beige;
    padding: 40px;
    cursor: text;
    text-align: right;
}

button{
    width: 50px;
    height: 50px;
}

.button{
    border-radius: 50px;
    padding: 10px;
    text-align: center;
    font-size: medium;
    margin: auto;

}
.button:hover{
    background-color: turquoise;
}

h1{
    text-align: center;
}