= form_tag sessions_path do
  - if flash.alert
    #errors
      %h3= flash.alert
  = label_tag :email
  = text_field_tag :email, params[:email], :class => 'field'

  = label_tag :password
  = password_field_tag :password, params[:password], :class => 'field'

  = submit_tag "Sign In"

= form_tag sessions_path do
  - if flash.alert
    #errors
      %h3= flash.alert
  = label_tag :email
  = text_field_tag :email, params[:email], :class => 'field'

  = label_tag :password
  = password_field_tag :password, params[:password], :class => 'field'
  %br

  = submit_tag "Sign In"

Move sign in button to its own line
Move sign in button to its own line
