Problem with bootstrap nav toggle

Hi everybody,

I use my theme in localhost and there is a bug with nav toggle and responsive css (i believe).
Here is the html code for my menu :

<nav class="main-menu">
                                <div class="navbar-header">
                                    <!-- Toggle Button -->
                                    <button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse">
                                <span class="icon-bar"></span>
                                <span class="icon-bar"></span>
                                <span class="icon-bar"></span>
                                </button>
                                </div>

                                <div class="navbar-collapse collapse clearfix">
                                    <ul class="navigation clearfix">
                                        <li class="current"><a href="index.html">Home</a></li>
                                        <li><a href="project.html">Project</a></li>
                                        <li><a href="partners.html">Partners</a></li>
                                        <li><a href="people.html">People</a></li>
                                        <li><a href="news.html">News</a></li>
                                        
                                    </ul>
                                </div>
                            </nav>

And here is what i use in wordpress :

<nav class="main-menu">
                                <div class="navbar-header">
                                    <!-- Toggle Button -->
                                    <button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse">
                                        <span class="icon-bar"></span>
                                        <span class="icon-bar"></span>
                                        <span class="icon-bar"></span>
                                    </button>
                                </div>
                                <div class="navbar-collapse collapse clearfix">
                                
                                <?php
                                    wp_nav_menu( array(
                                        'theme_location'    => 'menu-1',
                                        
                                        'menu_class'        => 'navigation clearfix',
                                        'fallback_cb'       => 'wp_bootstrap_navwalker::fallback',
                                        'walker'            => new WP_Bootstrap_Navwalker())
                                            );
                                ?>
                                
                                </div>
                            </nav>

But it doesen’t work good, i put in functions.php :

require_once get_template_directory() . '/wp-bootstrap-navwalker.php';
		register_nav_menus( array(
			'menu-1' => esc_html__( 'Primary', 'visionitn' ),
		) );

And all css files in a function:

function add_theme_scripts() {
wp_enqueue_style( 'bootstrap', get_template_directory_uri() . '/assets/css/bootstrap.css');
wp_enqueue_style( 'revolution-slider', get_template_directory_uri() . '/assets/css/revolution-slider.css');
wp_enqueue_style( 'slider-setting', get_template_directory_uri() . '/assets/css/slider-setting.css');
wp_enqueue_style( 'responsive', get_template_directory_uri() . '/assets/css/responsive.css');
wp_enqueue_style( 'font-awesome', get_template_directory_uri() . '/assets/css/font-awesome.css');
wp_enqueue_style( 'flaticon', get_template_directory_uri() . '/assets/css/flaticon.css');
wp_enqueue_style( 'animate', get_template_directory_uri() . '/assets/css/animate.css');
wp_enqueue_style( 'owl', get_template_directory_uri() . '/assets/css/owl.css');
wp_enqueue_style( 'jquery.fancybox', get_template_directory_uri() . '/assets/css/jquery.fancybox.css');
wp_enqueue_style( 'jquery.mCustomScrollbar.min', get_template_directory_uri() . '/assets/css/jquery.mCustomScrollbar.min.css');
 
}
add_action( 'wp_enqueue_scripts', 'add_theme_scripts' );

Please ??

Thank you.