%section.input-content
  %h2
    Url to onebox
  %input#onebox-url(placeholder="url")
  %button#go{type: 'button'}
    Go
%section.preview
  %h2
    Onebox preview
  .onebox-container
%section.debug-message
  %h2
    Debug message
  .message-group
    %label(for='oneboxed-url')
      url
    %span#oneboxed-url
  .message-group
    %label(for='onebox-engine')
      engine
    %span#onebox-engine
  .message-group
    %label(for='placeholder-html')
      placeholder_html
    %span#placeholder-html
  .message-group
    %label(for='preview-html')
      to_s
    %span#preview-html

%section.input-content
  %h2
    Url to onebox
  %input#onebox-url(placeholder="url")
  %button#go{type: 'button'}
    Go
%section.preview
  %h2
    Onebox preview
  .onebox-container
%section.debug-message
  %h2
    Debug message
  .message-group
    %label(for='oneboxed-url')
      url
    %span#oneboxed-url
  .message-group
    %label(for='onebox-engine')
      engine
    %span#onebox-engine
  .message-group
    %label(for='placeholder-html')
      placeholder_html
    %pre#placeholder-html
  .message-group
    %label(for='preview-html')
      to_s
    %pre#preview-html

Use <pre> for debugging HTML
Use <pre> for debugging HTML
