Prototype always larger than my screen

Hi Folks. I have a simple site where things are 1920 pixels wide. I have a 16in Macbook Pro which I thought was that size. But at max width or full screen my prototype is always a little bit bigger than my screen which doesn’t allow me to see anything properly centered or just as I want to see it.

It’s not scrollbars. The site is just bigger than the screen at 1920. Or at least I don’t think it is.

Am I missing something here?

Thanks as always.

Blu

Scratch this. I had a random label I couldn’t see off my screen. Dumb but useful. Thanks everyone.