ckeditor 4.7.0删除样式属性

Question

i read more article about how to allow ckeditor to accept all attribute and how to fix it, but still i have problem. ckeditor remove style attribute. i try to justify text or change color ,....;

here is what i do:

ckeditor/config.js

/**
 * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.
 * For licensing, see LICENSE.md or http://ckeditor.com/license
 */

CKEDITOR.editorConfig = function( config ) {
    config.allowedContent = true;
    config.extraAllowedContent = 'style;*[id,rel](*){*}';//
    config.removeFormatAttributes = '';
};

but when i insert data into database i see:

<p [removed] center;">

i read [CKEditor strips inline attributes

[1]: CKEditor strips inline attributes and to more option like config.extraAllowedContent = '*{*}'; but still no luck.

any suggestion ?