Hi,
To display your full width page content, don’t add your content in the page using this shortcode “[column_content type=”one_half”]”
Just simply add your content in page editor and select Full Width page template from Page Attribute section which is in the right side
https://www.gracethemes.com/documentation/milestone-doc/#page-templates
Please share your website URL where your want to display content in full width.
Regards
Grace Themes