relecture markup W3C

layouts/partials/blocks/templates/video/dailymotion.html

@@ -2,6 +2,5 @@
   class="dailymotion"
   src="https://www.dailymotion.com/embed/video/{{ .id }}"
   title="{{ .title }}"
-  frameborder="0"
   loading="lazy">
 </iframe>

layouts/partials/blocks/templates/video/vimeo.html

@@ -2,6 +2,5 @@
   class="vimeo"
   src="https://player.vimeo.com/video/{{ .id }}"
   title="{{ .title }}"
-  frameborder="0"
   loading="lazy">
 </iframe>

layouts/partials/blocks/templates/video/youtube.html

@@ -2,6 +2,5 @@
   class="youtube"
   src="https://www.youtube.com/embed/{{ .id }}"
   title="{{ .title }}"
-  frameborder="0"
   loading="lazy">
 </iframe>