How do I modify the ‘more’ link in a feed

These are some tricks:

 /* Modify the read more link on the_excerpt() */

 function et_excerpt_length($length) {
 return 220;
 }
add_filter('excerpt_length', 'et_excerpt_length');

/* Add a link  to the end of our excerpt contained in a div for styling 
purposes and to break to a new line on the page.*/

 function et_excerpt_more($more) {
 global $post;
 return '<div class="view-full-post"><a href="'. get_permalink($post->ID) . 
'" class="view-full-post-btn">View Full Post</a></div>;';
}
add_filter('excerpt_more', 'et_excerpt_more');

Thank you