.zennable
  %input#zen-toggle-comment.zen-toggle-comment{ tabindex: '-1', type: 'checkbox' }
  .zen-backdrop
    - classes << ' js-gfm-input markdown-area'
    = f.text_area attr, class: classes, placeholder: 'Leave a comment'
    = link_to nil, class: 'zen-enter-link' do
      %i.fa.fa-expand
      Edit in fullscreen
    = link_to nil, class: 'zen-leave-link' do
      %i.fa.fa-compress

.zennable
  %input#zen-toggle-comment.zen-toggle-comment{ tabindex: '-1', type: 'checkbox' }
  .zen-backdrop
    - classes << ' js-gfm-input markdown-area'
    = f.text_area attr, class: classes, placeholder: 'Leave a comment'
    = link_to nil, class: 'zen-enter-link', tabindex: '-1' do
      %i.fa.fa-expand
      Edit in fullscreen
    = link_to nil, class: 'zen-leave-link' do
      %i.fa.fa-compress

Fix tabindex for comment form
Fix tabindex for comment form
