fixed image style

assets/sass/_theme/blocks/video.sass

@@ -2,7 +2,8 @@
     .video
         @include aspect-ratio(16/9, 'iframe')
         @supports not (aspect-ratio: 1)
-            iframe
+            iframe,
+            img
                 min-height: 400px
         position: relative
         &-player
@@ -22,6 +23,7 @@
                 width: 100%
                 height: 100%
             img
+                object-fit: cover
                 z-index: 1
             &::after
                 content: ''

layouts/partials/blocks/templates/video.html

@@ -16,7 +16,10 @@
             <div class="video">
               <div class="video-player">
                 <button class="video-player__play" title ="{{- i18n "blocks.video.play" -}}" aria-label="{{- i18n "blocks.video.play" -}}"></button>
-                <img src="https://img.youtube.com/vi/XEEUOiTgJL0/hqdefault.jpg" alt="">
+                <picture>
+                  <source srcset="https://osuny-1b4da.kxcdn.com/g1qn3b0yvdg2t0wosq059xocpyq1?format=webp&width=1800&height=0&&fit=inside&quality=50" type="image/jpg" />
+                  <img src="https://osuny-1b4da.kxcdn.com/g1qn3b0yvdg2t0wosq059xocpyq1?format=webp&width=1800&height=0&&fit=inside&quality=50" alt="" />
+                </picture>
               </div>
               {{ $url := .url}}
               {{ if strings.Contains $url "vimeo" }}

layouts/partials/head/csp.html

 {{- with site.Data.website.external_domains -}}
-<meta http-equiv="-Content-Security-Policy"
+<meta http-equiv="Content-Security-Policy"
       content="
         default-src 'self' {{ delimit . " " }}
         {{ if not hugo.IsProduction }}'unsafe-inline'{{ end }}