HTML/CSS not resizing my page correctly

So I have my website here: http://ift.tt/2mDK2Li

If you were to reduce the width of the browser window it changes from desktop view to tablet view, then if you keep going it will change to mobile view.

It works on desktop browsers but if you were to look at the website through a mobile it will always display the web page in tablet mode. I cant figure out why.

If you inspect the desktop webpage and press the toggle device toolbar button and try to resize the page to a mobile view, you get a similar effect, it stays in tablet view.

I have checked the console and there are no errors displayed there, I cant find anything wrong with it. Any help would be appreciated.