app/views/devise/confirmations/new.html.erb
<div class="container">
<div class="row justify-content-md-center">
<div class="col-md-6 mt-2rem mb-2rem">
<h2 class="text-center mt-2 mb-2rem">
Resend confirmation instructions
</h2>
<%= form_for(resource, as: resource_name, url: confirmation_path(resource_name), html: { method: :post }) do |f| %>
<%= devise_error_messages! %>
<div class="form-group mt-4">
<%= f.label :email %><br />
<%= f.email_field :email, autofocus: true, autocomplete: "email", value: (resource.pending_reconfirmation? ? resource.unconfirmed_email : resource.email),
class: "form-control" %>
</div>
<div class="form-group mt-4 mb-4">
<%= f.submit "Resend confirmation instructions",
class: "btn btn-primary btn-block btn-lg btn-3d white-space-normal" %>
</div>
<% end %>
<% if !signed_in? %>
<%= render "devise/shared/links" %>
<% end %>
</div>
</div>
</div>