app/views/home/_videos.html.erb
<div class="mt-3">
<div id="featured-videos" class="application container home-block">
<% featured_videos(3).each_slice(3) do |videos| %>
<div class="card-deck">
<% videos.each do |video| %>
<div class="card border-light">
<div class="card-body">
<div class="embed-responsive embed-responsive-16by9">
<iframe class="embed-responsive-item" src="<%= video.embed_url %>" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
</div>
</div>
</div>
<% end %>
</div>
<% end %>
</div>
</div>