.videobox {
    position: relative;
    width: 100%;
    height: 0;
    padding-bottom: 56.25%;
}

.videobox iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}
.sf-footer form.sf__footer-form-newsletter .sf__newletter__form-input { background-color: rgba(255,255,255,0.15); }