Stick footer to bottom of page, this footer also responds to changes in page height.

application.css.scss

.body-class {
  min-height: 84%;

}

application.html.erb

<div class=container>
  <%- flash.each do |key, value| -%>
    <div class="alert-box alert radius">
      <div class="flash flash-<%= key %>">
        <%= value %>
      </div>
    </div>
  <%- end -%>
</div>
<div class="body-class">
  <%= yield %>
</div>

  <%= javascript_include_tag 'application' %>
  <%= render "layouts/applicationfooter" %>
  </body>
</html>

footer.scss

.footer {
  background: $blue;
  bottom: 0;
  color: $white;
  height: 250px;
  left: 0;
  line-height: 50px;
  position: relative;
  text-align: center;
  width: 100%;