.embed-portrait-video-wrapper {
    position: relative;
    height: 0;
    overflow: hidden;
    background: #000;
    max-width: 100%;
    margin-bottom: 20px;
}

.embed-portrait-video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}