How I can disable a zoom on a mobile page when tapping

[laboletory]

Hi, this is the demo:
http://laboletory.com/metodi/

I want to disable the zoom when the user is tapping over the buttons (mobile/tablet)
Any ideas?

[Djon]

I think it's here

[laboletory]

thank you, I've also added

<meta name="viewport" content="width=device-width,initial-scale=1">