after_increased_and_decreased_indent.erb

<%= form_for(resource, :as => resource_name, :url => session_path(resource_name)) do |f| %>
  <p><%= f.label :email %><br />
  <%= f.text_field :email %></p>
  
  <p><%= f.label :password %><br />
  <%= f.password_field :password %></p>
  
    <% if devise_mapping.rememberable? -%>
      <p><%= f.check_box :remember_me %> <%= f.label :remember_me, "Remember me" %></p>
      <% end -%>
      
      <p><%= f.submit "Sign In" %></p>
      <% end %>

after_increased_indent.erb

<%= form_for(resource, :as => resource_name, :url => session_path(resource_name)) do |f| %>
<p><%= f.label :email %><br />
  <%= f.text_field :email %></p>
  
    <p><%= f.label :password %><br />
      <%= f.password_field :password %></p>
      
      <% if devise_mapping.rememberable? -%>
      <p><%= f.check_box :remember_me %> <%= f.label :remember_me, "Remember me" %></p>
      <% end -%>
      
      <p><%= f.submit "Sign In" %></p>
      <% end %>

original_file.erb

<%= form_for(resource, :as => resource_name, :url => session_path(resource_name)) do |f| %>
  <p><%= f.label :email %><br />
  <%= f.text_field :email %></p>

  <p><%= f.label :password %><br />
  <%= f.password_field :password %></p>

  <% if devise_mapping.rememberable? -%>
    <p><%= f.check_box :remember_me %> <%= f.label :remember_me, "Remember me" %></p>
  <% end -%>

  <p><%= f.submit "Sign In" %></p>
<% end %>