Sidebar Appearance

New problem! The plugin is not appearing like it is on my other site. I don’t know what I need to fix to make it look the same, or how to fix it.

I want the widget here: http://tracietravels.com/blog
to look like the widget
here: http://jenandtraciego.com

Keep in mind I am no coder, so you would have to be pretty specific with any answers. Thank you!

https://wordpress.org/plugins/simple-instagram/