The comments are fully customizable by CSS and multiple comment instances can be displayed on the same referring URL by changing the “path” attribute of the comment.

Open your Web page in your HTML editor program and navigate to the spot in your page where you would like to add the print link. Copy and paste the following HTML/CSS code into the page.

By appending just a few lines of HTML and CSS code, researcher Louis Dion-Marcil showed how an external sender could hide the very warning from an email message.