Part 1/~3 for #1134.

And also handled one other site as well.

Dandelion Sprout's Website Stretcher.txt

@@ -1,5 +1,5 @@
 ! Title: 🖥️ Dandelion Sprout's Website Stretcher
-! Version: 21February2025v3-Beta
+! Version: 24May2025v1
 ! Expires: 3 days
 ! Licence: https://github.com/DandelionSprout/adfilt/blob/master/LICENSE.md
 ! Description: Have you ever felt bothered by how many websites still think that everyone are using narrow monitors? Well, here's how to stretch them out like a piece of gum!
@@ -494,3 +494,11 @@ tvtropes.org###main-container:style(width: unset !important)
 
 ! Category: WikiGG (as in "Good Game")
 wiki.gg,~hellokittyislandadventure.wiki.gg##:is(.content-body,.mw-parser-output):style(max-width:none!important)
+
+! Category: ChatGPT
+chatgpt.com##div[class*=turn-messages]:style(--thread-content-max-width:unset!important;max-width:2000px)
+chatgpt.com##div.text-base:style(--thread-content-max-width:unset!important;max-width:2000px)
+
+! Category: Winstall
+winstall.app##ul[class^=apps_all__]:style(grid-template-columns: repeat(6, 1fr)!important)
+winstall.app##div.container:style(max-width:2400px!important)