prevent webpage zooming in mobile

1<meta 
2     name='viewport' 
3     content='width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0' 
4/>

1<meta 
2     name='viewport' 
3     content='width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0' 
4/>
5