main video{max-width:100%;height:auto}main h1{text-align:center;margin-top:1.5rem;margin-bottom:.75rem}main h1+div{gap:.75rem;margin-top:.5rem;margin-bottom:1rem}@media (max-width:640px){main h1+div{text-align:center;align-items:center}main button{width:100%;max-width:280px}}main h1+div+div{margin-top:1rem}