How to make the Facebook Like Box responsive?

I am using the Facebook like box code in my side bar by pasting the Facebook code into a text widget. My theme is responsive, and I'd like to get the like box to resize correctly. I found this tutorial but he says the way he is doing it, isn't "fully responsive" so I didn't know if there was a better way to do it.

NOTE: this answer is obsolete. See the community wiki answer below for an up-to-date solution.

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I found this Gist today and it works perfectly: https://gist.github.com/2571173

(Many thanks to https://gist.github.com/smeranda)

/* 
Make the Facebook Like box responsive (fluid width)
https://developers.facebook.com/docs/reference/plugins/like-box/ 
*/

/* 
This element holds injected scripts inside iframes that in 
some cases may stretch layouts. So, we're just hiding it. 
*/

#fb-root {
    display: none;
}

/* To fill the container and nothing else */

.fb_iframe_widget, .fb_iframe_widget span, .fb_iframe_widget span iframe[style] {
    width: 100% !important;
}

Colin's example for me clashed with the like button. So I adapted it to only target the Like Box.

.fb-like-box, .fb-like-box span, .fb-like-box span iframe[style] { width: 100% !important; }

Tested in most modern browsers.

NOTE: Colin's solution didn't work for me. Facebook may have changed their markup. Using * should be more future-proof.

Wrap the Like box with a div:

<div id="likebox-wrapper">
    <iframe src="..."></iframe> <!-- likebox code -->
</div>

and add this to your css file:

#likebox-wrapper * {
   width: 100% !important;
}

As of August 4 2015, the native facebook like box have a responsive code snippet available at Facebook Developers page.

You can generate your responsive Facebook likebox here

https://developers.facebook.com/docs/plugins/page-plugin

This is the best solution ever rather than hacking CSS.

The answer you're looking for as of June, 2013 can be found here:

https://gist.github.com/dineshcooper/2111366

It's accomplished using jQuery to rewrite the inner HTML of the parent container that holds the facebook widget.

Hope this helps!

None of the css trick worked for me (in my case the fb-like box was pulled right with "float:right"). However, what worked without any additional tricks is an IFRAME version of the button code. I.e.:

<iframe src="//www.facebook.com/plugins/like.php?href=..." 
        scrolling="no" frameborder="0" 
        style="border:none; overflow:hidden; width:71px; height:21px;" 
        allowTransparency="true">
</iframe>

(Note custom width in style, and no need to include additional javascript.)

I was trying to do this on Drupal 7 with the " fb_likebox" module (https://drupal.org/project/fb_likebox). To get it to be responsive. Turns out I had to write my own Contrib module Variation and stripe out the width setting option. (the default height option didn't matter for me). Once I removed the width, I added the <div id="likebox-wrapper"> in the fb_likebox.tpl.php.

Here's my CSS to style it:

 `#likebox-wrapper * {
  width: 100% !important;
  background: url('../images/block.png') repeat 0 0;
  color: #fbfbfb;
 -webkit-border-radius: 7px;
  -moz-border-radius: 7px;
   -o-border-radius: 7px;
  border-radius: 7px;
   border: 1px solid #DDD;}`