app/views/static_contents/new.html.erb
<div class="text-center">
<h1 class="h3 mb-0 font-weight-bold">Inhalt erstellen</h1>
</div>
<div class="row justify-content-center">
<div class="col-lg-8">
<%= form_with(url: static_contents_path, method: :post, local: true) do %>
<%= render partial: "static_contents/form", locals: { static_content: @static_content } %>
<% end %>
</div>
</div>