app/views/sessions/new.html.erb
<% provide(:title, "Log in") %>
<div class="container nav_padding center">
<h1>Log in</h1>
<div class="row">
<div class="col-md-6 col-md-offset-3">
<%= form_tag sessions_path do %>
<p>
<%= password_field_tag :sec_hash, '' ,class: 'form-control' %>
</p>
<p class="button"><%= submit_tag "Log in" %></p>
<% end %>
</div>
</div>
</div>