html, body, main, .page-sign {
    height: 100%;
    width: 100%;
}

.page-sign {
    background-attachment: fixed;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

    .page-sign.sign-in {
        background-image: linear-gradient(166deg, rgba(111, 104, 160, 0.28) 50%, rgba(17, 18, 29, 0.52) 70%), url(../../../../../images/industria.jpg);
    }



.card-sign-in {
    background-color: #4f576f;
    opacity: .9;
    border-radius: 10px;
    border: 0px;
}

    .card-sign-in .card-header {
        border-radius: 10px;
        background-color: white;
        text-align:center;
    }