Deprecated: Function get_currentuserinfo is deprecated since version 4.5.0! Use wp_get_current_user() instead. in /var/www/html/wp-includes/functions.php on line 5383
that’s a CSS bug, indeed, please accept my apologies and thank you for reporting! It appears because of the longer excerpt.
I’ve prepared a fix, please download this archive from my repository, unzip it, and upload the contained files into the theme folder (/wp-content/themes/Kanso/), replacing the existing files.