Quote Josicus:
By default there is no closing quote with Artisteer. I asked Artisteer support how to solve this as I needed it for a project. Code below worked like a charm for me so I share it with the rest.
blockquote p {
background-image: url("images/postquote.png");
background-repeat: no-repeat;
background-position: bottom right;
}
You may consider adding another image for closing quote (the same image but turned the right way) to your images folder and using it in the code as, for example, background-image: url("images/postquote2.png");