CSS property: -webkit-text-size-adjust
    Description
Specifies a size adjustment for displaying text content in Safari on iPhone.
Syntax
-webkit-text-size-adjust: none | auto | <percentage>;
Values
- none
- The text size is not adjusted. 
- auto
- The text size is automatically adjusted for Safari on iPhone. 
- <percentage>
- The size in percentage at which to display text in Safari on iPhone. 
Versions
Examples
The text size is automatically adjusted for Safari on iPhone:
p {
    -webkit-text-size-adjust: auto;
}
The text size is not adjusted:
p {
    -webkit-text-size-adjust: none;
}
The text size is adjusted at 60%:
p {
    -webkit-text-size-adjust: 60%;
}