Wrap the header into a div.container. to make it as wide as #main-wrapper.container

wrap_header_in_container.php

// header content wrapped
add_action('after_setup_theme', 'wrap_header');
function wrap_header(){
    add_action('__header', 'tc_header_header_start', 0);
    function tc_header_header_start(){
        echo '<div class="tc-header-container container">';
    }
    add_action('__header', 'tc_header_header_end', 40);
    function tc_header_header_end(){
        echo '</div>';
    }
    // apply tc-header borders to our new container
    add_filter('tc_user_options_style', 'my_header_style',11);
    function my_header_style($style){
        $top_border = esc_attr(tc__f('__get_option', 'tc_top_border'));
        if ( $top_border == 1 ){
 
            add_filter('my_header_top_border', function(){
                //we need the skin color!
                $skin = esc_attr(tc__f('__get_option', 'tc_skin'));
                $color = TC_init::$instance->skin_color_map[$skin];
                return array(
                    'border-top: 5px solid' . $color .';', 
                    'border-top: none;'
                );
            });
        }
        $tb_style = apply_filters('my_header_top_border', array('',''));
        $style .= sprintf('
            .tc-no-sticky-header header.tc-header,
            .tc-sticky-header.sticky-disabled header.tc-header{
                %2$s
                border-bottom: none;
                background: transparent;
            }%3$s
            .tc-no-sticky-header .tc-header-container,
            .tc-sticky-header.sticky-disabled .tc-header-container{
                %1$s
                border-bottom: 10px solid #e9eaee;
                background: white;
            }%3$s',
            $tb_style[0],
            $tb_style[1],
            "\n"
        );

        return $style;
    }
}