<style>.embed-container { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%; } .embed-container iframe, .embed-container object, .embed-container embed { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }</style><div class='embed-container'><iframe src='https://www.youtube.com/embed/yAAhUnAXhvE?&rel=0' frameborder='0' boder='0' framespacing='0' allowfullscreen title="臺中市西區大同國小112學年度第二學期社團成果表演-國樂社"></iframe></div>