뒤로.
<iframe src="https://www.facebook.com/plugins/video.php?height=476&href=https%3A%2F%2Fwww.facebook.com%2Freel%2F1549966996614843%2F&show_text=false&width=267&t=0" width="267" height="476" style="border:none;overflow:hidden" scrolling="no" frameborder="0" allowfullscreen="true" allow="autoplay; clipboard-write; encrypted-media; picture-in-picture; web-share" allowFullScreen="true"></iframe>
앞으로
<iframe src="https://www.facebook.com/plugins/video.php?height=476&href=https%3A%2F%2Fwww.facebook.com%2Freel%2F867591399719103%2F&show_text=false&width=267&t=0" width="267" height="476" style="border:none;overflow:hidden" scrolling="no" frameborder="0" allowfullscreen="true" allow="autoplay; clipboard-write; encrypted-media; picture-in-picture; web-share" allowFullScreen="true"></iframe>