/* You could add your additional css here e.g. styling
for embeded content in the Markdown (*.md) files */
.youtubeVideoWrapper {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 */
    height: 0;
}
.youtubeVideoWrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}