A) questa è la parte css dove sta #fullscreen-bg__video:
C)ended non so cosa sia, ho trovato questo script in questa pagina internet e speravo funzionasse: http://stackoverflow.com/questions/1...ect-after-playcodice:body { margin: 0; padding: 0; } .content { margin: 0 auto; width: 100%; max-width: 960px; padding: 0 15px; } h1 { margin: 60px 0; padding: 0; font-size: 50px; text-align: center; } p { margin: 0 0 30px 0; font-size: 30px; line-height: 1.5; } .fullscreen-bg { position: fixed; top: 0; right: 0; bottom: 0; left: 0; overflow: hidden; z-index: -100; } .fullscreen-bg__video { position: absolute; top: 0; left: 0; width: 100%; height: 100%; } @media (min-aspect-ratio: 16/9) { .fullscreen-bg__video { height: 300%; top: -100%; } } @media (max-aspect-ratio: 16/9) { .fullscreen-bg__video { width: 300%; left: -100%; } } @media (max-width: 767px) { .fullscreen-bg { background: url('../img/videoframe.jpg') center center / cover no-repeat; } .fullscreen-bg__video { display: none; } }