Can’t resize menu column

Hello,

I wanted to add some simple Additional CSS to get a smaller menu size (and so more space for the content part) but I cannot make it work.

The code I added is the following:

add_filter('tc_global_layout', 'my_custom_layout' );
function my_custom_layout( $layout ) {
    $my_layout      = array(
        'r' => array ('content' => 'span10’ , 'sidebar' => 'span2’),//sidebar on the right
        'l' => array ('content' => 'span10’ , 'sidebar' => 'span2’),//sidebar on the left
        'b' => array ('content' => 'span4' , 'sidebar' => 'span4'),//both : two sidebars
        'f' => array ('content' => 'span12' , 'sidebar' => false),//full width : no sidebars
    );

    //sets new values for content and sidebar (checks if there are new values to set first)
    foreach ($layout as $key => $value) {
        $layout[$key]['content']   = isset( $my_layout[$key]['content']) ? $my_layout[$key]['content'] : $layout[$key]['content'];
        $layout[$key]['sidebar']   = isset( $my_layout[$key]['sidebar']) ? $my_layout[$key]['sidebar'] : $layout[$key]['sidebar'];
    }
    return $layout;
}

What’s wrong with it ?
Is there any other maybe simpler CSS to do it ?
I just want more or less 1/5 menu size and 4/5 content size

Thanks for your help, still a beginner here… ??
Eric

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