.BigBannerImageContainer {
    width: 100%;
    height: auto;
}

    .BigBannerImageContainer img {
        width: 100%;
        height: auto;
    }

.BigBannerVideoContainer {
    display: inline-block;
    margin: 0;
    padding: 0;
    position: relative;
    width: 100%;
    height: 0px;
    padding-top: 56.25%;
}

.iframestyle {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    height: 100%;
}