[css] Set div height equal to screen size

I have a div element in twitter-bootstrap which will have content that will overflow vertically outside the screen.

I would like the div to take the height of the size of the browser window and let the rest of the content scroll vertically within the window.

I have a sample that is not working @jsFiddle

#content {
    border: 1px solid #000;
    overflow-y:auto;
    height:100%;
}

<div class="container-fluid">
    <div class="row-fluid">
        <div class="span3">Side Bar</div>

        <div class="span9" id="content">
            Content Bar Example Content
        </div>
    </div>
</div>

I am posting this question after reading so questions like SO Questions

EDIT--

Sorry guys I guess I got my question wrong.

What I would like is that my div must fill the rest of the vertical space in the screen.

It would be great if someone can suggest a responsive solution

Use simple CSS height: 100%; matches the height of the parent and using height: 100vh matches the height of the viewport.

Use vh instead of %;

You need to give height for the parent element too! Check out this fiddle.

CSS:

html, body {height: 100%;}

#content, .container-fluid, .span9
{
    border: 1px solid #000;
    overflow-y:auto;
    height:100%;
}?

JavaScript (using jQuery) Way:

$(document).ready(function(){
    $(window).resize(function(){
        $(".fullheight").height($(document).height());
    });
});

use

 $(document).height()

  overflow=auto 

for scrolling

This worked for me JsFiddle

Html

..bootstrap
<div class="row">
  <div class="col-4 window-full" style="background-color:green">
    First Col
  </div>
  <div class="col-8">
    Column-8
  </div>
</div>

css

.row {
   background: #f8f9fa;
   margin-top: 20px;
}

 .col {
   border: solid 1px #6c757d;
   padding: 10px;
}

JavaScript

var elements = document.getElementsByClassName('window-full');
var windowheight = window.innerHeight + "px";

fullheight(elements);
function fullheight(elements) {
    for(let el in elements){
        if(elements.hasOwnProperty(el)){
            elements[el].style.height = windowheight;
        }
    }
}

window.onresize = function(event){
     fullheight(elements);
}

Checkout JsFiddle link JsFiddle

Using CSS {height: 100%;} matches the height of the parent. This could be anything, meaning smaller or bigger than the screen. Using {height: 100vh;} matches the height of the viewport.

.container {
    height: 100vh;
    overflow: auto;
}

According to Mozilla's official documents, 1vh is:

Equal to 1% of the height of the viewport's initial containing block.

try this

$(document).ready(function(){
    $('#content').height($(window).height());
});