html,body{margin:0;padding:0;overflow:hidden;background-color:#000;display:flex;align-items:center;justify-content:center;height:100%;width:100%}#root{display:flex;align-items:center;justify-content:center;width:100%;height:100%}#flashcontent{width:960px;height:560px;background-color:#000;border:none;border-radius:0;outline:none;display:block}