app/views/devise/confirmations/new.html.erb
<div class="login-block">
<h2>Resend confirmation instructions</h2>
<p class="login-explanation">
Or you could <%= link_to "create an account", new_user_registration_path %> or
<%= link_to "sign in", new_user_session_path %>.
</p>
<%= semantic_form_for(resource, as: resource_name, url: confirmation_path(resource_name), html: { method: :post }) do |f| %>
<%= render "devise/shared/error_messages", resource: %>
<%= f.inputs do %>
<%= f.input :email, input_html: { autofocus: true, autocomplete: "email", value: (resource.pending_reconfirmation? ? resource.unconfirmed_email : resource.email) } %>
<% end %>
<%= f.actions do %>
<%= f.action :submit, label: "Resend confirmation instructions", button_html: { class: "button button-rounded button-large button-action" } %>
<% end %>
<% end %>
</div>