Bloquear el zoom html
<meta name='viewport'
content='width=device-width, initial-scale=1.0, maximum-scale=1.0,
user-scalable=0' >
S4N705H
<meta name='viewport'
content='width=device-width, initial-scale=1.0, maximum-scale=1.0,
user-scalable=0' >html {
zoom: 110%;
}
/*This can be used for any tag, id or class*/