How to restrict Zooming the Webpage code example
Example 1: lock the zoom html
<meta name='viewport'
content='width=device-width, initial-scale=1.0, maximum-scale=1.0,
user-scalable=0' >
Example 2: mobile prevent zoom
<meta
name='viewport'
content='width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0'
/>