I wanted to hide just the author. And not just hide via css but remove it completely.
So I found library/structure/content-extensions.php
and I changed these lines – lines 147 and 148:
<!– <span class=”by-author”><?php _e( ‘By’, ‘attitude’ ); ?> “><?php //the_author(); ?></span> |
–>
This works better for me as with the other solution the author is still visible by doing a ‘view source’, whereas this way it is completely hidden and my WP username isn’t visible to the whole world (better for security).