In Webflow there are three basic approaches to this;
- You can load all of the content on the page, and then use interactions to hide and show the article in Webflow
- You can use IFRAMEs, and load the content in there, if you’ve styled your individual article pages to display well that way.
- You can use JS .fetch() to get the content you want from the article page and display it.
Here’s some related discussion that might help you-