Follow these steps to embed custom HTML on your site.
To embed custom HTML:
Click the HTML embed button ( </> ) on the comment editor box to launch the HTML editor box.
This button is visible only to moderators and owners.
Paste your HTML code into the editor, and click OK. (A message will be displayed for any HTML validation errors.)
A preview of the output is displayed below the comment editor.
Click Post Comment to display the output in the stream.