<%= f.label :co_author, class: "s_grid s_grid_2" %> <%= f.text_field :co_author, class: "s_grid s_grid_4" %>
<%= f.label :email, class: "s_grid s_grid_2"%> <%= f.text_field :email, class: "s_grid s_grid_4" %>
<%= f.label :type, class: "s_grid s_grid_2"%>