Disable Auto Zoom in Input "Text" tag - Safari on iPhone

Question

I made an HTML page that has an <input> tag with type="text". When I click on it using Safari on iPhone, the page becomes larger (auto zoom). Does anybody know how to disable this?

Answer 1

The browser will zoom if the font-size is less than 16px and the default font-size for form elements is 11px (at least in Chrome and Safari).

Additionally, the select element needs to have the focus pseudo-class attached.

input[type="color"],
input[type="date"],
input[type="datetime"],
input[type="datetime-local"],
input[type="email"],
input[type="month"],
input[type="number"],
input[type="password"],
input[type="search"],
input[type="tel"],
input[type="text"],
input[type="time"],
input[type="url"],
input[type="week"],
select:focus,
textarea {
  font-size: 16px;
}

It's not necessary to use all the above, you can just style the elements you need, eg: just text, number, and textarea:

input[type='text'],
input[type='number'],
textarea {
  font-size: 16px;
}

Alternate solution to have the input elements inherit from a parent style:

body {
  font-size: 16px;
}
input[type="text"] {
  font-size: inherit;
}