How to place borders on comment form using disqus plugin?

Hi!

I just wanna ask how to place borders on my comment form using the disqus plugin. I have edited and set up the plugin in my dashboard but when it is displayed in upfront, it does not show.

This is the link to the page with the comment form at the end of the post http://talkaboutroses.com/what-do-yellow-roses-mean/ . Can you please also suggest any plugins for comment forms similar to disqus which I can modify for borders to make my comment form look good? thanks!