title: How to split the drop down menus WordPress walker on columns?
body: <p>How to split the drop down menus WordPress walker on columns?
  How to split the drop-down menus into columns using WP-Bootstrap-Navwalker? as here:<a href="https://i.stack.imgur.com/yyzi1.png" rel="nofollow noreferrer">dropdown-menu with 3 columns</a></p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"&gt;&lt;/script&gt;
  &lt;script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"&gt;&lt;/script&gt;
  &lt;script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"&gt;&lt;/script&gt;
  
  &lt;!-- Navigation--&gt;
  &lt;nav id="mainmenu" class="navbar navbar-expand-md navbar-dark"&gt;
    &lt;button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#mainNavbar" aria-controls="navbarToggler" aria-expanded="false" aria-label="Toggle navigation"&gt;
          &lt;span class="navbar-toggler-icon"&gt;&lt;/span&gt;
        &lt;/button&gt;
  
  
    &lt;div class="collapse navbar-collapse justify-content-center" id="mainNavbar"&gt;
      &lt;ul class="navbar-nav nav-pills "&gt;
        &lt;li class="nav-item active"&gt;
          &lt;a class="nav-link" href="index.html"&gt;Home&lt;/a&gt;
        &lt;/li&gt;
        &lt;li class="nav-item"&gt;
          &lt;a class="nav-link " href="page/company.html"&gt;page1&lt;/a&gt;
        &lt;/li&gt;
  
        &lt;li class="nav-item dropdown has-megamenu"&gt;
          &lt;a href="#" class="dropdown-toggle nav-link" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false" id="servicesjs"&gt;Page2&lt;/a&gt;
          &lt;div class="container-fluid dropdown-menu submenu1 multi-column columns-3 "&gt;
            &lt;div class="row"&gt;
              &lt;div class=" col-md-6 col-lg-4 "&gt;
                &lt;ul class="multi-column-dropdown"&gt;
                  &lt;li&gt;
                    &lt;h4&gt;&lt;a class="dropdown-caption" href="page/repairs.html"&gt;Header Link&lt;/a&gt;&lt;/h4&gt;
                  &lt;/li&gt;
                  &lt;li&gt;
                    &lt;div class="dropdown-divider"&gt;&lt;/div&gt;
                  &lt;/li&gt;
                  &lt;li&gt;&lt;a class="dropdown-item" href="page/repairs_hydrocylindrs.html"&gt;Link&lt;/a&gt;&lt;/li&gt;
                  &lt;li&gt;&lt;a class="dropdown-item" href="page/hydromotors.html"&gt;Link&lt;/a&gt;&lt;/li&gt;
                  &lt;li&gt;&lt;a class="dropdown-item" href="page/piston-pumps.html"&gt;Link&lt;/a&gt;&lt;/li&gt;
                  &lt;li&gt;&lt;a class="dropdown-item" href="page/hydraulic-distributor.html"&gt;Link&lt;/a&gt;&lt;/li&gt;
                  &lt;li&gt;&lt;a class="dropdown-item" href="page/hydro_rotators.html"&gt;Link&lt;/a&gt;&lt;/li&gt;
                  &lt;li&gt;&lt;a class="dropdown-item" href="page/dosing_pumps.html"&gt;Link&lt;/a&gt;&lt;/li&gt;
                  &lt;li&gt;&lt;a class="dropdown-item" href="page/hydraulic-molot.html"&gt;Link&lt;/a&gt;&lt;/li&gt;
                &lt;/ul&gt;
              &lt;/div&gt;
              &lt;div class=" col-md-6 col-lg-4 "&gt;
                &lt;ul class="multi-column-dropdown"&gt;
                  &lt;li&gt;
                    &lt;h4&gt;&lt;a class="dropdown-caption" href="page/diagnostics.html"&gt;Header2 Link&lt;/a&gt;&lt;/h4&gt;
                  &lt;/li&gt;
                  &lt;li&gt;
                    &lt;div class="dropdown-divider"&gt;&lt;/div&gt;
                  &lt;/li&gt;
                  &lt;li&gt;&lt;a class="dropdown-item" href="page/diagnostics2.html"&gt; Link&lt;/a&gt;&lt;/li&gt;
                  &lt;li&gt;&lt;a class="dropdown-item" href="page/test_stend.html"&gt; Link&lt;/a&gt;&lt;/li&gt;
                &lt;/ul&gt;
              &lt;/div&gt;
              &lt;div class="col-md-6 col-lg-4"&gt;
                &lt;ul class="multi-column-dropdown"&gt;
                  &lt;li&gt;
                    &lt;h4&gt;&lt;a class="dropdown-caption" href="page/diagnostics.html"&gt;Header Link&lt;/a&gt;&lt;/h4&gt;
                  &lt;/li&gt;
                  &lt;li&gt;
                    &lt;div class="dropdown-divider"&gt;&lt;/div&gt;
                  &lt;/li&gt;
                  &lt;li&gt;&lt;a class="dropdown-item" href="page/stend.html"&gt;Link&lt;/a&gt;&lt;/li&gt;
                  &lt;li&gt;&lt;a class="dropdown-item" href="page/pneumatic.html"&gt;Link&lt;/a&gt;&lt;/li&gt;
                  &lt;li&gt;&lt;a class="dropdown-item" href="page/turning_works.html"&gt;Link&lt;/a&gt;&lt;/li&gt;
                &lt;/ul&gt;
              &lt;/div&gt;
            &lt;/div&gt;
          &lt;/div&gt;
        &lt;/li&gt;
        &lt;li class="nav-item dropdown has-megamenu"&gt;
          &lt;a href="#" class="dropdown-toggle nav-link" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false" id="stockjs"&gt;Page3&lt;/a&gt;
          &lt;div class="container-fluid dropdown-menu submenu2 multi-column columns-3 "&gt;
            &lt;div class="row"&gt;
              &lt;div class=" col-md-4"&gt;
                &lt;ul class="multi-column-dropdown"&gt;
                  &lt;li&gt;
                    &lt;h4&gt;&lt;a class="dropdown-caption" href="page/sale.html"&gt; Header Link&lt;/a&gt;&lt;/h4&gt;
                  &lt;/li&gt;
                  &lt;li&gt;
                    &lt;div class="dropdown-divider"&gt;&lt;/div&gt;
                  &lt;/li&gt;
                  &lt;li&gt;&lt;a class="dropdown-item" href="page/stocks_trumpets.html"&gt; Link&lt;/a&gt;&lt;/li&gt;
                  &lt;li&gt;&lt;a class="dropdown-item" href="page/rod.html"&gt; Link&lt;/a&gt;&lt;/li&gt;
  
                &lt;/ul&gt;
              &lt;/div&gt;
              &lt;div class=" col-md-4"&gt;
                &lt;ul class="multi-column-dropdown"&gt;
                  &lt;li&gt;
                    &lt;h4&gt; &lt;a class="dropdown-caption" href="page/sale.html"&gt;Header Link&lt;/a&gt;&lt;/h4&gt;
                  &lt;/li&gt;
                  &lt;li&gt;
                    &lt;div class="dropdown-divider"&gt;&lt;/div&gt;
                  &lt;/li&gt;
                  &lt;li&gt;&lt;a class="dropdown-item" href="page/making_cylinders.html"&gt; Link&lt;/a&gt;&lt;/li&gt;
                  &lt;li&gt;&lt;a class="dropdown-item" href="page/rvd.html"&gt;Link&lt;/a&gt;&lt;/li&gt;
                &lt;/ul&gt;
              &lt;/div&gt;
              &lt;div class=" col-md-4"&gt;
                &lt;ul class="multi-column-dropdown"&gt;
                  &lt;li&gt;
                    &lt;h4&gt; &lt;a class="dropdown-caption" href="page/sale.html"&gt;Header Link&lt;/a&gt;&lt;/h4&gt;
                  &lt;/li&gt;
                  &lt;li&gt;
                    &lt;div class="dropdown-divider"&gt;&lt;/div&gt;
                  &lt;/li&gt;
                  &lt;li&gt;&lt;a class="dropdown-item" href="page/new_hydro.html"&gt;Header Link&lt;/a&gt;&lt;/li&gt;
                &lt;/ul&gt;
              &lt;/div&gt;
            &lt;/div&gt;
          &lt;/div&gt;
        &lt;/li&gt;
        &lt;li class="nav-item"&gt;
          &lt;a class="nav-link" href="page/contact.html"&gt;Page4&lt;/a&gt;
        &lt;/li&gt;
      &lt;/ul&gt;
    &lt;/div&gt;
  &lt;/nav&gt;
  &lt;!-- End navigation--&gt;</code></pre>
  </div>
  </div>
  </p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;!-- Navigation WordPress--&gt;
  &lt;nav id="mainmenu" class="navbar navbar-expand-md navbar-dark"&gt;
    &lt;button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#mainNavbar" aria-controls="navbarToggler" aria-expanded="false" aria-label="Toggle navigation"&gt;
      &lt;span class="navbar-toggler-icon"&gt;&lt;/span&gt;
    &lt;/button&gt;
    &lt;?php
  wp_nav_menu( array(
      'theme_location' =&gt; 'primary',
      'depth'    =&gt; 2, // 1 = with dropdowns, 0 = no dropdowns.
   'container'   =&gt; 'div',
   'container_class' =&gt; 'collapse navbar-collapse',
   'container_id'  =&gt; 'bs-example-navbar-collapse-1',
   'menu_class'  =&gt; 'navbar-nav mr-auto',
      'fallback_cb'  =&gt; 'WP_Bootstrap_Navwalker::fallback',
      'walker'   =&gt; new WP_Bootstrap_Navwalker()
  ) );
  ?&gt;
  
  &lt;/nav&gt;
  &lt;!-- Navigation--&gt;</code></pre>
  </div>
  </div>
  
  Standard menu WP-Bootstrap-Nav Walker.
  How to split the drop-down menus into columns using WP-Bootstrap-Navwalker?
  I would like to see the options without using different plug-ins for WP</p>