In edit mode, click a block, choose "Design" and add the class of "code":
If you're using the advanced tinymce editor, you can click the quote button to apply this quote. If not, simply add <blockquote></blockquote> tags around your content.
To add a rule, make sure you have the advanced editor enabled under the tinymce options and click the rule button.
You can easily add spacers to add extra space between things in your site.
For example, to add a 30 pixel high spacer, edit the page and add an HTML block. In the block, add the following code:
Note, spacers are available at 5px increments up to 50px, if you need a larger space, simply add more spacers!