Support » Theme: Frontier » Additional CSS Storage Location

  • I have been trying for months to add to the “Additional CSS” section and it just says there’s an error saving. I assume it’s because it’s too big, so I wanted to go into my install and manually edit the file, but I cannot find it. Where in the theme’s file tree do I find the Additional CSS file?

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  • AddWeb Solution Pvt. Ltd.


    hello @oscarguy

    It is not stored in files ,It’s stored in the database, within the wp_posts table, under the custom_css post type, where the post name is the theme slug. There you also have the related customize_changeset and revision post types.

    The custom css post ID is also stored in the wp_options table under each theme mods, e.g. theme_mods_twentysixteen for Twenty Sixteen.

    It’s informative to check out how the custom CSS fetched from the database with:

    wp_get_custom_css() that uses wp_get_custom_css_post()
    and displayed through the wp_head action with:



    Theme Author ronangelo


    there’s an error saving. I assume it’s because it’s too big

    It’s probably not a good idea to paste long CSS to the Customizer’s Additional CSS option but I don’t see why it would cause any errors. Are there any error messages?

    If you really need to paste huge chucks of CSS then it would be better if you used a child theme you can add your codes on the child theme’s style.css file.

    • This reply was modified 4 months, 1 week ago by  ronangelo.

    I have tried making a child theme, but something in the code I pulled from the site isn’t working and since I don’t know how to code php, I have no idea what’s wrong.

    Theme Author ronangelo


    PHP? Only CSS can be added to the Additional CSS option. What are you trying to accomplish? Could you link the page where you got the codes from?

    I was referring to the child theme. I haven’t put PHP in the Additional CSS section.

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