video{position:fixed;top:50%;left:50%;translate:-50% -50%}video.fullscreen{translate:0 0;width:auto;height:auto;object-fit:cover}video.zoomfit{min-width:100%;min-height:100%}video.letterbox{width:100%;height:100%}body{margin:0;padding:0;background:#000;overflow:hidden}canvas{border:1px solid pink}