.calculator {
    width: 300px;
    height: 400px;
    margin: 50px auto;
    padding: 10px;
    background-color: lightgray;
    border: 5x;
    border-color: black;
    text-align: center;
}

#result {
    width: 80%;
    height: 10%;
    height: inherit 500px;
    margin: 10px;
    padding: 10px;
    background-color: rgb(172, 170, 170);
    border: none;

}


.buttons {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-gap: 30px;
}

button {
    padding: 10px;
    background-color: lightgray;
    border: none;
    cursor: pointer;

}

button:hover {
    background-color: #9a9898;
}