ooo, if you're willing to, you can check out some rentries, such as this one https://rentry.co/Pancreas . they have a couple of great dark border images that i often use, if thats what you're looking for!! :3
2 options, you can apply width and height modifers directly to the iframe, or you can use the #chattable ID in your stylesheet and change the dimensions there!
made a drawbox! it's so cute it also automatically creates a gallery on the page of anything i get sent!! (it should at least) please leave me a lil something :3
how did you make this?