app/views/devise/sessions/new.html.erb
<div class="wrapper">
<%= form_for(resource, as: resource_name, url: session_path(resource_name), html: {class: "form-signin"}) do |f| %>
<h2 class="form-signin-heading">APIQ</h2>
<%= f.email_field :email, autofocus: true, class: 'form-control', placeholder: Kms::User.human_attribute_name(:email), required: '' %>
<%= f.password_field :password, autocomplete: "off", class: 'form-control', placeholder: Kms::User.human_attribute_name(:password), required: '' %>
<% if devise_mapping.rememberable? -%>
<div class="checkbox">
<label>
<%= f.check_box :remember_me %> <%= t("remember_me") %>
</label>
</div>
<% end -%>
<%= f.submit t("login"), class: "btn btn-lg btn-primary btn-block" %>
<br>
<%= render "devise/shared/links" %>
<% end %>
</div>