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

Hi, this is the demo:

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

I think it's here

Schermafbeelding 2020-07-31 om 16.35.46


thank you, I've also added

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