How to make Koenig compatible themes? (having problem with images)

Never mind! I figured it out… lol. It was a dumb mistake.

I setup 1.25 locally on windows. Currently practicing theme development for Ghostjs. I’ve made one successfully in the past before Koenig.

My issue is images.
I’m using Bootstrap 4.
I’m keeping things simple with a single style.css file.

How do I make it so post images widths are not exceeding the page width?
I tried
img { max-width: 100% !important } and I even tried that on the .kg-image {} in my style.css file. No luck. Nothing budged.

Help please. :’(