Is the Macbook Pro browser viewport height of 665px unusual?

I'm building a website with the help of a graphic designer, his Macbook Pro's Chrome and Safari viewport have a height of only 665px. It's causing text overflow all over the place on the website.

Is this normal for macs? I've started by creating a media query for under 700px height, is this the way to go or is there a larger problem with the website? I try to use proportions where possible and meta viewport is set to:

<meta name="viewport" content="width=device-width">

I can't find anything about it through google, so I'm not sure how to approach this.