<% content_for :title do %>
    <% "OpenSplitTime: Sign Up" %>
<% end %>

<header class="ost-header">
  <div class="container">
    <div class="ost-heading row">
      <div class="ost-title col">
        <h1><strong><%= t('.sign_up') %></strong></h1>
      </div>
    </div>
  </div>
</header>

<article class="ost-article container">
  <div class="row justify-content-center">
    <div class="col col-login">
      <%= render 'devise/registrations/form' %>
      <%= render 'devise/shared/links' %>
    </div>
  </div>
</article>

<% content_for :title do %>
    <% "OpenSplitTime: Sign Up" %>
<% end %>

<header class="ost-header">
  <div class="container">
    <div class="ost-heading row">
      <div class="ost-title col">
        <h1><strong><%= t('.sign_up') %></strong></h1>
      </div>
    </div>
  </div>
</header>

<article class="ost-article container">
  <div class="row justify-content-center">
    <div class="col col-login">
      <%= link_to(fab_icon("facebook-square", text: " Sign up with Facebook"),
                  user_facebook_omniauth_authorize_path,
                  class: "btn btn-facebook btn-block") %>
      <hr class="hr-text", data-content="or">
      <p class="text-center">Sign up with your Email</p>
      <%= render 'devise/registrations/form' %>
      <%= render 'devise/shared/links' %>
    </div>
  </div>
</article>

Add Facebook link on signup page
Add Facebook link on signup page
