Disable resizing for tablet

[TNelson]

I have been trying to make my game responsive.  One major issue is that when you doubletap on tablet it adjusts the screen size.

I used this fix:

<meta name="viewport" content="initial-scale=.7, user-scalable=no">

And it resizes it fine for tablet and desktop, but not for mobile.  Is there a way to code a double-tap event listener that will eliminate the resizing feature instead??

 

btw, my game:

 

http://5ermash.com/creditevaders3.html

Thanks!