.seccion-video-fondo{position:relative;overflow:hidden}.seccion-video-fondo::before{content:'';position:absolute;top:0;left:0;width:100%;height:100%;background:linear-gradient(to bottom,rgba(0,0,0,0.3) 0%,rgba(0,0,0,1) 100%);z-index:1}.seccion-video-fondo video{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover;z-index:0}