In the same way that the image size of masonry grid?

I found the solution.
I found two things failed.

The first solution.
kleo / page-parts / post-content-masonry.php copy the files to kleo-child / page-parts / post-content-masonry.php.

Before change:
$ image = aq_resize ($ slide, $ kleo_config [ 'post_gallery_img_width'], $ kleo_config [ 'post_gallery_img_height'], true, true, true);
After the change:
$ image = aq_resize ($ slide, 480, 480, true, true, true);

Before change:
$ image = aq_resize ($ img_url, $ kleo_config [ 'post_gallery_img_width'], null, true, true, true);
After the change:
$ image = aq_resize ($ img_url, 480, 480, true, true, true);

No change.

The second solution.
kleo-child / functions.php

function KleoCustomImagesSizes () {
     global $ kleo_config;
     // Post image sizes for carousels and galleries
     $ Kleo_config [ 'post_gallery_img_width'] = 555;
     $ Kleo_config [ 'post_gallery_img_height'] = 333;
}
add_action ('after_setup_theme', 'KleoCustomImagesSizes');

There is also no change.

I would like to help.