- Acme Themes

Thank you for your quick reply.
It dit not help, but when I click the help button, it brings me here https://en.support.wordpress.com/custom-design/editing-css/ where it says: “Note: you must have either WordPress.com Premium or WordPress.com Business active on your site to be able to add custom CSS to your site”.

I have a free version of WordPress, I guess then I cannot change this in the CSS?