[suggestion] (example script attached) Load Steam in the pop-in

Please check new version of the script.
I've applied fixed padding to frame and implemented a couple of other features too.

Changelog: https://greasyfork.org/en/scripts/8064-steamgifts-open-steam-in-pop-in/versions

Well, not sure if I want to. I don't use SG++. Instead of that I'm using Easy SteamGifts with disabled endless scrolling (since "hide same giveaways" button doesn't work there) and my own endless scrolling script which supports "hide same giveaways" button and also hides joined giveaways.
https://greasyfork.org/en/scripts/8091-steamgifts-hide-joined-and-perform-auto-paging

For the grid layout I'm using my own style. It isn't as good as SG++ one but still works for me.
https://userstyles.org/styles/110513/steamgifts-minimalistic-layout-blocks

Suddenly I decided to add SG++ auto-paging support. So, try it if you still interested.

OK, now it works with SG++ :)

Install-it and use it for a few minutes if you don't like it you uninstall-it, and be assured it deserves your 2 minutes. ;-)

Here: http://www.steamgifts.com/discussion/OX63y/steamgifts-open-pages-in-pop-in

Originally it was like that, but recently Steam added header which prevents loading their pages inside of a frame. As the result instead of Steam empty page were displayed. You can open an original Steam page in a separate tab by a middle-click, though.

BTW, with original Steam I periodically had an issue with redirect to the front page when Steam page of a game or pack wasn't available in my country. With SteamDB it's possible to look which games are actually in the pack and decide to join it or hide it forever.