.calculator {
    width: 220px;
    font-size: 15px;
    margin: 0 auto;
    border: 1px solid #717171;
    color: #ffffff;
    border-radius: 30px;
    padding: 30px;
    text-align: center;
    background-color: transparent;
    box-shadow: 0px 3px 15px rgba(113, 115, 119, 0.5);
}

body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background: linear-gradient(45deg, #0a0a0a, #3a4452);
    place-items: center;
}

.display {
    width: 220px;
    height: 60px;
    font-size: 30px;
    text-align: right;
    border: 4px solid black;
    margin: 0 auto;
    background-color: #ffffff;
    padding: 5px;
}

button {
    width: 51px;
    height: 51px;
    margin: 0.1%;
    cursor: pointer;
    font-size: 20px;
    background-color: transparent;
    box-shadow: -1px -1px 4px rgba(255, 225, 225, 0.3);
    color: #ffffff;
}

button:hover {
    box-shadow: inset 2px 2px 5px #717377, inset -3px -3px 7px #ffffff;
}

.operators {
    color: #6dee0a;
}

.eq {
    background-color: #fb7c14;
}