In my blog, one article in list view should show title, cover image, and read more button. I want the button of each article to point to different external url. I tried to hyperlink the button using style in the provided editor builder, but it always points to my blog article.

I supposed it's because the hyperlink was overwritten with the url on XML (HTML).

How should I code it, so the XML (HTML) can receive my input in editor builder provided by Odoo?