app/views/sessions/new.html.erb
<header>
<h1><%= t '.title' %></h1>
</header>
<div class="row">
<div class="col-md-6 col-sm-8 col-xs-8">
<%= render :partial => '/sessions/form' %>
</div>
<div class="col-md-6 col-sm-6 col-xs-6">
<div class="no_account">
<p><%= link_to '<i class="fa fa-lg fa-github"></i> Sign in through GitHub'.html_safe, '/auth/github', class: 'btn btn-default btn-lg' %></p>
</div>
</div>
</div>