<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Responsive Video</title>
    <style>
        body, html {
            margin: 0;
            padding: 0;
            height: 100%;
            overflow: hidden;
        }
        .video-container {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            overflow: hidden;
            z-index: 1; /* Alterado */
        }
        iframe {
            position: absolute;
            top: 50%;
            left: 50%;
            width: 100vw;
            height: 100vh; /* Mantém 100vh */
            transform: translate(-50%, -50%);
            object-fit: cover; /* Permite que o vídeo cubra completamente */
        }
        /* Vídeo para desktop */
        #video-desktop {
            display: block;
        }
        #video-mobile {
            display: none;
        }
        /* Altera o vídeo para mobile quando a tela for menor que 768px */
        @media screen and (max-width: 768px) {
            #video-desktop {
                display: none;
            }
            #video-mobile {
                display: block;
            }
        }
    </style>
</head>
<body>
    <div class="video-container">
        
        <iframe id="video-desktop" src="https://player.vimeo.com/video/980970759?autoplay=1&loop=1&muted=1&background=1" frameborder="0" allow="autoplay; fullscreen" allowfullscreen></iframe>

        
        <iframe id="video-mobile" src="https://player.vimeo.com/video/1017612530?autoplay=1&loop=1&muted=1&background=1" frameborder="0" allow="autoplay; fullscreen" allowfullscreen></iframe>
    </div>
</body>
</html>