Your image html code update looks good. No problem there at all 👍

Beyond what was previously mentioned, you have two other items which are preventing your site from being mobile friendly.

The first is your Custom Insert. These are right after each of your first posts. Your table image needs the html for mobile which you applied earlier. Apply the CSS from my previous link, to that image in your Custom Island. Your Custom Island can be edited at:
Control Panel > Portal | Custom Islands

The second one is a bug in 760 that has been fixed in 761. its related to the Facebook images on the footer of each post.
Basically, that element under each of your post threads which says, "Tweet". There is a Facebook element right next to it that has a 450px wide iframe, which is preventing your pages from being mobile. This was a very old style of presenting Facebook's like system. They have since updated it to use javascript. There should be a Facebook "Like" phrase right next to Twitter's "Tweet" text also, but I am not seeing it displayed on your website on any of my browsers. So Facebook may have stopped using that old format all together (?). Though the 450px wide iFrame still exists in 7.5.x and 7.6.0's template.

backstory: while working on UBB.threads 7.6.0, I was unaware that there was even Facebook or Twitter integration at all. So it was never noticed until someone mentioned it about two months after the 7.6.0 release. This has been fixed for UBB.threads 7.6.1 by updating both Facebook and Twitter share buttons to follow their currently recommended integration code. In addition, a Facebook "Share" button was also added to 761.
The 760 bug was documented and fixed for 7.6.1 @ https://www.ubbcentral.com/forums/ubbthreads.php/topics/260038#Post260038

The fix for this Facebook iFrame is to just disable that integration in your Control Panel until you get 7.6.1+. This will remove the display problem. This does not affect Twitter at all. You can continue using the 760 Twitter integration without issue.

1) go to Control Panel > Display Settings
2) And then open the "Topic & Post Page Settings" section.
3) Remove the check-mark from the "Show Facebook "Like" Button" box.
Attachments
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Last edited by isaac; 08/10/2017 12:01 AM. Reason: spelling/typos/clarification

Current developer of UBB.threads PHP Forum Software
Current Release: UBBT 7.7.5 // Preview: UBBT 8.0.0
isaac @ id242.com // my forum @ CelicaHobby.com