html,
body {
    height: 100%;
    margin: 0;
    overflow: hidden;
}

.container-fluid {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.row {
    flex: 1;
}

.col-md-8,
.col-md-4 {
    height: 100%;
}

.iframe-container {
    height: 100%;
}

.iframe-container iframe {
    height: 100%;
}

.d-flex-center {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100%;
}