app/views/devise/sessions/new.html.erb
<section id='login-box'>
<%= form_for(resource, as: resource_name, url: session_path(resource_name)) do |f| %>
<%= image_tag("iamME.png", :class => 'iamMElogin') %>
<div class="field">
<%= f.text_field :login, autocomplete: "off", autofocus: true, :placeholder => 'Username' %>
</div>
<div class="field">
<%= f.password_field :password, autocomplete: "off", :placeholder => 'Password' %>
</div>
<div class="actions">
<%= f.submit "Log in", :class=>'submit-button' %>
</div>
<div class='login-links'>
<% if devise_mapping.rememberable? -%>
<div class="checkbox">
<%= f.check_box :remember_me %>
<%= f.label :remember_me %>
</div>
<% end -%>
<p class='sign-up-link'><%= link_to('Register', new_user_registration_path) %> </p>
<p class='forgot-link'><a href="/users/password/new">Forgot your password?</a></p>
</div>
<% end %>
</section>