.demo-video{background:#070b16;border:1px solid #ffffff14;border-radius:18px;max-width:960px;margin:0 auto;overflow:hidden;box-shadow:0 30px 80px #00000073,0 0 60px #667eea26}.demo-video-media{width:100%;height:auto;display:block}@media (max-width:640px){.demo-video{border-radius:12px}}