On Marketplacekit, you can add your code for any content of the site. To access this, login to your website panel. Click on "Addons" HTML CSS Editor

You will be redirected to a new page. You can now edit the HTML, CSS, Brand and add custom snippets. content editor

You can edit each and every page, widget, etc from HTML editor. Screenshot from 2019-06-24 18-12-49

Likewise, you can edit the styling of your website from CSS Editor. Screenshot from 2019-06-24 18-15-16

Similarly, you can edit the font used in your site, color or different elements, etc. from Brand Editor. brand

You can even add internal CSS for your website to overwrite the external CSS used in your site by adding Custom Snippets. custom snippets