app/views/devise/sessions/new.html.erb
<h2><%= t('.sign_in', :default => "Sign in") %></h2>
<%= simple_form_for(resource, :as => resource_name, :url => session_path(resource_name)) do |f| %>
<div class="form-inputs">
<%= f.input :email, :required => false, :autofocus => true, placeholder: t('layouts.application.placeholders.email') %>
<%= f.input :password, :required => false, placeholder: t('layouts.application.placeholders.password') %>
<br>
<%= f.input :remember_me, :as => :boolean, inline_label: t('devise.remember_me'), label: false if devise_mapping.rememberable? %>
</div>
<div class="form-actions">
<%= f.button :submit, t('.sign_in', :default => "Sign in") %>
</div>
<% end %>
<%= render "devise/shared/links" %>