Hi there!
As you may already know, pages do not have the same features on WordPress like posts do.
For example, in most WordPress themes, the featured image is displayed in a post but NOT in a page. Yet, there is a way to achieve this.
However, we will need to add some HTML code. You need to be careful when doing some custom coding to your site or else you may mess up your website. I suggest you first do a backup of your website before altering any codes.
Even better, create a test website! Loes has created a very important tutorial on the importance of opening a test site (see the link below). She explains how malicious scripts and plugins can really create havoc on your website. I strongly recommend you follow Loes' advice, and that you open a test website to test new HTML coding.
https://my.wealthyaffiliate.co...
Now, let's get started in displaying Featured Images from Site pages.
I have a couple of questions, One is how do I center a featured image. Two is I found this but I can not find any "content-single image???
I always advise people to first open a test website, before playing around with the editor of their regular website, to test added codes Using malicious scripts can wreck your website, open a test site Did you know that you can add codes to your training, without the risk that they are changing during copying?
See screenshot