app/views/devise/sessions/new.html.haml
%header.row
%h2.column.small-12 Sign in
= simple_form_for(resource, as: resource_name,
url: session_path(resource_name)) do |f|
.row
.column.small-12.medium-6
= f.input :login, placeholder: 'Username or email address'
.column.small-12.medium-6
= f.input :password, placeholder: 'Password'
.column.small-12.medium-6
= f.button :submit, 'Sign In', class: 'button small'
.column.small-12.medium-6
= render 'devise/shared/links'