add_filter( 'et_pb_gallery_image_width', 'custom_image_width' );
function custom_image_width($width) {
return '400';
}
add_filter( 'et_pb_gallery_image_height', 'custom_image_height' );
function custom_image_height($height) {
return '400';
}
add_image_size( 'custom-image-size', 400, 400, array( 'center', 'center' ) );
