bones73k/lib/bones73k_web/templates/layout/app.html.eex

<main role="main" class="container">

  <%# phoenix flash alerts: %>
  <div class="row justify-content-center">
    <div class="col-md-12 col-lg-10 col-xl-9 ">
      <%= for {kind, class} <- alert_kinds() do %>
        <%= if flash_content = get_flash(@conn, kind) do %>
          <div class="alert <%= class %> alert-dismissible fade show" role="alert">
            <%= flash_content %>
            <button type="button" class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button>
          </div>
        <% end %>
      <% end %>
    </div>
  </div>

  <%= @inner_content %>

</main>