CSS classes for theme

Does anybody know predefined (suggested by WP) CSS classes which should I use in my theme?

I have seen somewhere in Internet a list of all CSS classes, which are used in WP theme, but can’t find it.

UPDATE: I have found the site where I’ve seen this list: http://www.wpbeginner.com/wp-themes/default-wordpress-generated-css-cheat-sheet-for-beginners/

There are many CSS classes generated by WordPress, depending on context.

The Theme Review Guidelines include the following, WordPress-generated CSS classes:

• Alignment Classes:
  • .aligncenter
  • .alignleft
  • .alignright
• Caption Related Classes:
  • .wp-caption
  • .wp-caption-text
  • .gallery-caption
• Post Classes:
  • .sticky
• Comment Classes:
  • .bypostauthor

Then, there are the body classes generated by body_class().

Then, there are the post classes generated by post_class().

Then, there are the comment classes generated by comment_class().

Then, there are the menu item classes generated by wp_nav_menu().