app/views/sessions/new.html.erb
<% provide(:title, "Log in") %>
<div class="login-box">
<p class= "center"> <%= flash[:notice] if flash[:notice] %> </p>
<h1 class="center">Login</h1>
<br>
<div class="row">
<div class="col-md-6 col-md-offset-3">
<%= form_for(:session, url: login_path) do |f| %>
<%= f.label :email %>
<%= f.email_field :email, class: 'form-control' %>
<%= f.label :password %>
<%= f.password_field :password, class: 'form-control' %>
<br>
<%= f.submit "Log In", class: "btn btn-primary" %>
<% end %>
<br>
<p>New user? <%= link_to "Sign up now!", new_user_path %></p>
<%= link_to "Back to Main Page", root_path %>
</div>
</div>
</div>