How to modify default category widget list display?

Question

If you want to change the appearance, try editing the css that targets the categories.

If you want to change the text “Filled under:” (before) or the “,” (sep) that separate the categories, in my Genesis theme I use the following code . Try adapting it by changing genesis_post_meta to your version.

add_filter( 'genesis_post_meta', 'sp_post_meta' );
function sp_post_meta( $post_meta ) {
    $post_meta="[post_category before="" sep=""]";
    return $post_meta;
}