body .calculator {
    width: 300px;
    height: 300px;
    background-color: #eeeeee;
    border: 2px solid #CCCCCC;
    margin: 20px auto;
    padding-left: 0;
    padding-bottom: 0;
}

body .calculator td {
    height: 16.66%;
}

body .calculator tbody tr td:first-child {}

body .calculator td input[type="button"] {
    background: #bdc3c7;
    text-align: center;
    padding: 2px 20px 5px 16px;
    color: #000;
    border-radius: 5px;
    box-shadow: inset 0px 0px 7px #7f8c8d;
}

body .calc_td_result {
    text-align: center;
}

body .calc_result {
    width: 100% !important;
    text-align: right;
    border-radius: 8px;
}

body .calc_td_calculs {
    text-align: center;
}

body .calc_calculs {
    width: 90%;
    text-align: left;
}

body .calc_td_btn {
    width: 25%;
    height: 100%;
}

body .calc_btn {
    width: 90%;
    height: 90%;
    font-size: 20px;
}