Widget beside logo

Hi,
I’m trying to put a widget area beside logo, logo at left, widget at right and menu below, but I can’t.
I tryed to add the following code in functions,php

register_sidebar(array('name'=>'header',
	'before_widget' => '<div id="widget-header" ><div class="widget"><ul>',
	'after_widget' => '</ul></div></div>',
	'before_title' => '<h3>',
	'after_title' => '</h3>',
));
// add widget to header 
add_action( 'ava_main_header', 'enfold_customization_header_widget_area' );
function enfold_customization_header_widget_area() {
	dynamic_sidebar( 'header' );
}

and in the css custom file

#widget-header  {
  position: absolute;
  top: 0;
  right: 0;
}

but I get my widget area in the right of the screen outside the container margin.

Any idea?

Thanks.