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HTML 

              
                <!-- code I used in this example made by https://github.com/hanscees -->

<nav class="navbar is-info" role="navigation" aria-label="main navigation">
  <input type="checkbox" id="toggler" class="toggler" /> <!-- for toggling functionality. Should be at the same level as navbar-menu -->
  <div class="navbar-brand"> <!-- left side of bulma navbar -->
    <a class="navbar-item" href="https://www.bomengids.nl">Bomengidsnl</a>
    <label for="toggler" role="button" class="navbar-burger burger" aria-label="menu" aria-expanded="false" data-target="navbarBasicExample">
      <span aria-hidden="true"></span>
      <span aria-hidden="true"></span>
      <span aria-hidden="true"></span>
    </label>
  </div> <!-- end of left side of bulma navbar -->
  <div id="navbarBasicExample" class="navbar-menu" ><!-- dont shown on mobile -->
    <div class="navbar-start"><!-- left on big screen -->

      <!-- a dropdown menu -->
      <div class="navbar-item has-dropdown is-hoverable"><!-- begin dropdown box -->
        <input type="checkbox" id="dropdown1">
        <label for="dropdown1" class="navbar-link"> <img src="https://www.bomengids.nl/cssimages/treeicon-sss.png"> example </label> <!-- title dropdown -->

        <div id="dropdown-content1" class="navbar-dropdown"><!-- dropdown box items -->
          <a class="navbar-item" href="https://www.bomengids.nl/2015/families/berkfamilie.html" target="new">Berk familie</a>
          <a class="navbar-item"  target="new">X familie</a>
          <a class="navbar-item"  target="new">X familie</a>
        </div><!-- end dropdown box -->
    </div><!-- end dropdown menu -->



      <!-- a dropdown menu -->
      <div class="navbar-item has-dropdown is-hoverable"><!-- begin dropdown menu -->
        <input type="checkbox" id="dropdown2">
        <label for="dropdown2" class="navbar-link"> <img src="https://www.bomengids.nl/cssimages/treeicon-sss.png"> families </label> <!-- title dropdown -->

        <div id="dropdown-content2" class="navbar-dropdown"><!-- dropdown box items -->
          <a class="navbar-item" href="https://www.bomengids.nl/2015/families/berkfamilie.html" target="new">Berk familie</a>
          <a class="navbar-item" href="https://www.bomengids.nl/2015/families/eikfamilie.html" target="new">Eiken</a>
		  <a class="navbar-item" href="https://www.bomengids.nl/2015/families/elsfamilie.html" target="new">Elzen</a>
		  <a class="navbar-item" href="https://www.bomengids.nl/2015/families/esfamilie.html" target="new">Essen</a>
		  <a class="navbar-item" href="https://www.bomengids.nl/2015/families/esdoornfamilie.html" target="new">Esdoorns</a>
		  <a class="navbar-item" href="https://www.bomengids.nl/2015/families/iepfamilie.html" target="new">Iepen</a>
		  <a class="navbar-item" href="https://www.bomengids.nl/2015/families/lindenfamilie.html" target="new">Linden</a>
		  <a class="navbar-item" href="https://www.bomengids.nl/2015/families/populierfamilie.html" target="new">Populieren</a>
		  <a class="navbar-item" href="https://www.bomengids.nl/2015/families/kersfamilie.html" target="new">Kersen</a>
		  <a class="navbar-item" href="https://www.bomengids.nl/2015/families/lijsterbesfamilie.html" target="new">Lijsterbessen</a>
		  <a class="navbar-item" href="https://www.bomengids.nl/2015/families/leguminosafamilie.html" target="new">Vlinderbloemigen</a>
		  <a class="navbar-item" href="https://www.bomengids.nl/2015/families/wilgfamilie.html" target="new">Wilgen</a>

          <hr class="navbar-divider">
        </div><!-- end dropdown box -->
    </div><!-- end dropdown menu -->


 <!-- a dropdown menu -->
      <div class="navbar-item has-dropdown is-hoverable"><!-- begin dropdown box -->
        <input type="checkbox" id="dropdown3">
        <label for="dropdown3" class="navbar-link"> <img src="https://www.bomengids.nl/cssimages/treeicon-sss.png"> example </label> <!-- title dropdown -->

        <div id="dropdown-content3" class="navbar-dropdown"><!-- dropdown box items -->
          <a class="navbar-item" href="https://www.bomengids.nl/2015/families/dennen.html"  target="new">Dennen</a>
          <a class="navbar-item" href="https://www.bomengids.nl/2015/families/sparren.html" target="new">Sparren</a>
		  <a class="navbar-item" href="https://www.bomengids.nl/2015/families/zilversparren.html" target="new">Zilversparren</a>
		  <a class="navbar-item" href="https://www.bomengids.nl/2015/families/cypressen.html" target="new">Cypressen</a>
		  <a class="navbar-item" href="https://www.bomengids.nl/2015/families/ceders.html" target="new">Ceders</a>
		  <a class="navbar-item" href="https://www.bomengids.nl/2015/families/sequoias.html" target="new">Sequoias</a>
		  <a class="navbar-item" href="https://www.bomengids.nl/2015/families/hemlockdouglas.html" target="new">Hemlocks & Douglas spar</a>
		  <a class="navbar-item" href="https://www.bomengids.nl/2015/families/gymnospermsfamilie.html" target="new">Rest, Larix Taxus ..</a>


        </div><!-- end dropdown box -->
    </div><!-- end dropdown menu -->
 </div><!-- end navbar-start-->



    <div class="navbar-end"><!-- right on big screen -->
      <div class="navbar-item">
        <div class="buttons">
          <a class="button is-primary">
            <strong>Sign up</strong>
          </a>
          <a class="button is-light">
            Log in
          </a>
        </div><!-- end buttons -->
      </div><!-- end navbar-item -->
    </div><!-- end navbar-end -->
  </div> <!-- end navbar-menu -->
</nav>



<p></p>

<h1>Implementation of bulma navbar hamburger without javascript </h1>
<p>following <a target="_blank" href="https://github.com/jgthms/bulma/issues/2500"> bulma github issue #2500</a>.</p>
<p>As per request hamburger doesn't change style when toggled.</p>
!

CSS 

              
                /* We don't need checkbox to be displayed in order for it to work */
.toggler {
  display: none;
}

/* Below are all the functionalities */

/* Hamburger changes to X when toggler is checked */
.navbar .toggler:checked + .navbar-brand .burger span:nth-child(1) {
  -webkit-transform: translateY(5px) rotate(45deg);
  transform: translateY(5px) rotate(45deg);
}
.navbar .toggler:checked + .navbar-brand .burger span:nth-child(2) {
  opacity: 0;
}
.navbar .toggler:checked + .navbar-brand .burger span:nth-child(3) {
  -webkit-transform: translateY(-5px) rotate(-45deg);
  transform: translateY(-5px) rotate(-45deg);
}

/*  Displays menu when toggler is checked only on mobile/tablet */
@media screen and (max-width: 1024px) {
  .navbar .toggler:checked ~ .navbar-menu {
    display: block;
  }
  /* We don't want menu to be displayed on mobile by default */
  .navbar-menu {
    display: none;
  }
}

/* For dropdown functionality */

/* Same reason as for checkbox */
.has-dropdown input[type=checkbox] {
  display: none;
}
/* Hide by default */
.navbar-dropdown {
  display: none;
}
/* The functionality */
#dropdown1:checked ~ #dropdown-content1,
#dropdown2:checked ~ #dropdown-content2,
#dropdown3:checked ~ #dropdown-content3 {
    display: block;
}
!

JS
!
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