body{font-family:"Times New Roman",serif;background:#fff}main{width:1050px;max-width:95%;margin:30px auto;border:1px solid #4775b8;padding:18px;text-align:center}h1,h2{font-size:20px}section{display:flex;gap:24px;justify-content:center;flex-wrap:wrap;margin-top:25px}video,iframe{max-width:100%;background:#111}