app/views/devise/sessions/new.html.haml
.row
.col-sm-12.text-center
%h2 Sign In With
.row
= simple_form_for(resource, as: resource_name, url: session_path(resource_name)) do |f|
.form-inputs
.col-sm-5.col-centered
.well.clearfix
= f.error_notification
= f.input :email, required: false, autofocus: true, wrapper_html: {class: "col-sm-12"}
= f.input :password, required: false, wrapper_html: {class: "col-sm-12"}
= f.input :remember_me, as: :boolean, wrapper: :inline_checkbox if devise_mapping.rememberable?
.form-group.col-sm-12
= f.button :submit, "Log in", class: "btn btn-primary"
.form-group= render "devise/shared/links"