.nv-lbox{ position:fixed; inset:0; z-index:99999 }
.nv-lbox__overlay{ position:absolute; inset:0; background:rgba(0,0,0,.6) }
.nv-lbox__content{ position:relative; max-width:960px; width:calc(100% - 32px); margin:6vh auto 0; background:#000; border-radius:12px; padding:10px }
.nv-lbox__close{ position:absolute; right:10px; top:6px; background:transparent; border:0; color:#fff; font-size:28px; cursor:pointer }
.nv-lbox__frame{ position:relative; padding-top:56.25% }
.nv-lbox__frame iframe{ position:absolute; inset:0; width:100%; height:100%; border:0 }