Maybe/app/views/layouts/settings.html.erb

<%= render "layouts/shared/htmldoc" do %>
  <div class="flex h-full bg-gray-25">
    <div class="p-4 w-[260px] shrink-0 h-full overflow-y-auto">
      <%= render "settings/settings_nav" %>
    </div>

    <main class="py-4 px-10 grow flex h-full overflow-y-auto">
      <div class="relative max-w-4xl mx-auto flex flex-col w-full h-full">
        <div class="grow space-y-4 overflow-y-auto -mx-1 px-1 pb-12">
          <% if content_for?(:page_title) %>
            <h1 class="text-primary text-xl font-medium">
              <%= content_for :page_title %>
            </h1>
          <% end %>

          <%= yield %>
        </div>

        <div class="mt-4">
          <%= settings_nav_footer %>
        </div>
      </div>
    </main>
  </div>
<% end %>