form-with-recaptcha.html.erb

<div class="text-center">
  <div class="container">
    <%= bootstrap_form_with url: '/test1' do |f| %>
      <%= f.email_field :email %>
      <%= f.password_field :password %>
      <%= f.check_box :remember_me %>
      <br>
      <%= invisible_recaptcha_tags text: '<i class="fas fa-paper-plane"></i> 送信', class: 'btn btn-success' %>
    <% end %>
  </div>
</div>