.bitcoin-calculator-section .container {
    background: #1d1d1d;
    width: 1140px;
    height: 358px;
    margin-top: -130px;
    position: absolute;
    left: 0;
    right: 0;
}

(min-width: 1200px)
.container {
    width: 1170px;
}

(min-width: 992px)
.container {
    width: 970px;
}

(min-width: 768px)
.container {
    width: 750px;
}