I need to customize the layout for the Like box, the problem i am getting is i coud not find any way to do it in following iframe,
Facebook no longer support css. All facebook design hacks using css will no longer work. However, facebook now allows the likebox plugin to be rendered without a border via the show_border=false argument. But if you want to add some color gradients to background of your like box for matching your blog's colorful theme, you can SVG. Read this guide - http://www.howtokickblogger.com/2013/08/style-facebook-like-box-with-svg.html
I have tried to style de Like box too, but the new plugin does not support the "css=" option in the iframe.
I still use the old Like box plugin, but the CSS is cached and I cannot update it.
http://www.facebook.com/connect/connect.php?id=60159065762&connections=0&stream=0&css=http%3A%2F%2Fdescargas.mundijuegos.com%2Fcss%2Ffb2.css%3F12
The only way I know you can use your own CSS right now is using the script format with the "fb:fan" plugin.
Updated
if you use the "fb:fan" plugin, it generates an iframe . You can copy this URL and use it directly (http://www.facebook.com/plugins/fan.php?....).
I tried linking a Likebox to a local css file and was unsuccessful. In researching this question somewhere on the Facebook fora I read an admin's post saying Facebook wants to maintain consistent formatting across Like boxes so only a few properties can be adjusted, and those are the standard ones you get in the initial Like box code. Facebook's documentation leaves a lot to be desired.
Jim
You can still use the css option but you have to use a different iframe URL:
http://www.connect.facebook.com/widgets/fan.php?href=FACEBOOKPAGEURL&width=185&colorscheme=light&show_faces=true&border_color&stream=false&header=true&height=280&css=CSSFILE
Edit 14-3-2013
This workaround no longer works.