app/views/home/index.html.erb
<section>
<div class="bg-video">
<%= video_tag(['market.mp4', 'market.webm'], muted: true, autoplay: true, loop: true) %>
</div>
<article class="align-mid">
<h1 class="bg-text">Bienvenue sur Tutti Gruppi</h1>
<p>
<% if authentication_signed_in? %>
<%= link_to 'Se déconnecter', destroy_authentication_session_path, method: :delete %>
<% else %>
<%= link_to 'Se connecter', new_authentication_session_path %>
<% end %>
</p>
</article>
</section>