app/views/sessions/new.html.erb
<% provide(:title, t("sign.in.title")) %>
<h1><%= t("sign.in.title") %></h1>
<div class="row">
<div class="span6 offset3">
<%= form_for(:session, url: sessions_path) do |f| %>
<%= f.label :email %>
<%= f.text_field :email %>
<%= f.label :password %>
<%= f.password_field :password %>
<%= f.submit t("sign.in.link"), class: "btn btn-large btn-primary" %>
<% end %>
</div>
</div>