.youtube_area { aspect-ratio: 16/9; width: max(48%, 700px); }
.youtube_area iframe { width: 100%; height: 100%; object-fit: cover; }
.mb-8em { margin-bottom: 8em; }
.border-line { padding-top: 8em; border-top: 2px solid #313131; }
.grid-320 { display: grid; gap: 20px; grid-template-columns: repeat(auto-fill, minmax(360px, 1fr)); }
.grid-320 li { position: relative; overflow: hidden; aspect-ratio: 16/9; }
.grid-320 li img { position: absolute; width: 100%; top: 50%; left: 50%; transform: translate(-50%, -50%); }
.grid-320 li .btn-download { width: 32px; aspect-ratio: 1/1; border-radius: 32px; padding: 0; min-width: 0; display: flex !important; justify-content: center; align-items: center; position: absolute; bottom: 10px; right: 10px; }
.grid-320 li .btn-download i { position: relative; top: auto; right: auto; bottom: auto; left: auto; margin-top: 0; }
@media screen and (max-width: 767px) {
 .youtube_area { width: 100%; }
.grid-320 li .btn-download { width: 32px !important; }
 }