Turn off Chrome/Safari spell checking by HTML/css [duplicate]

Question

Yes, there is the HTML5 spellcheck attribute.

<textarea spellcheck="false"> or <input type="text" spellcheck="false">

http://www.whatwg.org/specs/web-apps/current-work/multipage/editing.html#spelling-and-grammar-checking

Update: This is now supported in the latest versions of all browsers.

This works in Safari 7.1 and should work also in others:

<input autocomplete="off" autocorrect="off" autocapitalize="off" 
spellcheck="false"/>

Only spellcheck="false" didn't work.

for all elements of a form it is possible and so:

<form spellcheck="false" .. />

In React, you gotta use spellCheck instead.

<input spellCheck={false} type="text"/>

Regarding outlining of input tags: don't do it, it's a visual cue for users.

But if you must:

#your-input{outline:none;}