.vidbg-container{position:absolute;z-index:-1;top:0;left:0;right:0;bottom:0;overflow:hidden;background-size:cover;background-repeat:no-repeat;background-position:50% 50%;background-color:#444;}.vidbg-container video{margin:auto;position:absolute;z-index:-1;top:50%;left:50%;transform:translate(-50%,-50%);max-width:none;opacity:0;}.vidbg-overlay{position:absolute;top:0;left:0;right:0;bottom:0;opacity:1;transition:opacity 0.5s ease;}