Change color of one character in a text box HTML/CSS

Question

I\'m designing a web site and i would like to ask you guys that, how can I change the color of just one character in a string in a text box of HTML by CSS?

example

Answer 1

I can't believe no one has suggested this yet. But if you're ok with a WebKit only solution, you can make a color gradient with discrete separations and apply it to the text like this:

.c1 {
  background: linear-gradient(to right, black 0% 1.19em, red 1.19em 1.9em, black 1.9em 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.c2 {
  color: white;
  background: linear-gradient(to right, black 0% 1.19em, red 1.19em 1.9em, black 1.9em 100%);
  
}

input{
  font-family: "Courier New", Courier;
}

<h1 class="c1">
STACK OVER FLOW
</h1>
This is what the gradient looks like with the text over it:
<h1 class="c2">
STACK OVER FLOW
</h1>
It even works on input forms, however you'll want to change the font to a Monospaced font like Courier so the color always lines up with the same letter:
<h1>
<input type="text" class="c1"></input>
</h1>

This is nice because it's not limited by the tag the text is placed in like some of the other answers. And if you're in a situation where you can't really change the html (for instance if you're using the same style sheet on multiple pages and need to make a retroactive change) this could be helpful. If you can change the html though, xec's answer has much better browser support.

Answer 2

You can't do this with a regular <input type="text"> or <textarea> element, but with a normal element (like <div> or <p>) made contenteditable, you have all the freedoms of html/css formatting.

<div contenteditable>
    ST<span style="color: red">A</span>CK OVERFLOW
</div>

http://jsfiddle.net/jVqDJ/

The browser support is very good as well (IE5.5+). Read more at https://developer.mozilla.org/en-US/docs/Web/HTML/Content_Editable

Answer 3

<font color="#colors">text text text</font> 

Answer 4

From css you can only change an elements property so you need to insert the letter "A" in another element like this:

ST<span>A</span>CK OVER FLOW just the 'A' letter is red!

And the CSS part is

span{
   color:#FF0000;
}

Or attach a class to it like this

ST<span class="myRedA">A</span>CK OVER FLOW just the '<A' letter is red!

CSS:

span.myRedA{
       color:#FF0000;
    }

Answer 5

You could try using

<style> 
span.green{ 
     color:green; 
    } 
span.purple{ 
       color:purple; 
    } 
</style> 

<spanclass="purple">Var</span> x = "<span class="green">dude</span>"; 

Answer 6

you could use bold tags A

css:

b {
font-color: red;
}