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CSS

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HTML 

              
                <!--  gallery 1 -->
<div class="gallery">
  <ul class="gallery__nav gallery__nav1">
    <li class="is-active">Cat</li>
    <li>Contrail</li>
    <li>Drizzle</li>
    <li>Grapes</li>
  </ul>

  <div class="gallery__tab-container gallery__tab-container1">
    <div class="gallery__tab gallery__tab1 is-active">
      <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/82/cat-nose.jpg" />
      <p>Close up cat nose</p>
    </div>
    <div class="gallery__tab gallery__tab2">
      <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/82/contrail.jpg" />
      <p>Passing overhead we sailed into tomorrow</p>
    </div>
    <div class="gallery__tab gallery__tab3">
      <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/82/drizzle.jpg" />
      <p>I heard the rain wash the streets</p>
    </div>
    <div class="gallery__tab gallery__tab4">
      <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/82/grapes.jpg" />
      <p>Oh the grapes, they had so much WRATH</p>
    </div>
  </div>
</div>

<!--  gallery 2 -->
<div class="gallery">
  <ul class="gallery__nav gallery__nav2">
    <li class="is-active">Oranges</li>
    <li>Shore</li>
    <li>Submerged</li>
    <li>Tulip</li>
  </ul>

  <div class="gallery__tab-container gallery__tab-container2">
    <div class="gallery__tab gallery__tab1 is-active">
      <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/82/orange-tree.jpg" />
      <p>Pluck an orange from the tree</p>
    </div>
    <div class="gallery__tab gallery__tab2">
      <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/82/shore.jpg" />
      <p>Approaching the shoreline, waiting for the tide</p>
    </div>
    <div class="gallery__tab gallery__tab3">
      <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/82/submerged.jpg" />
      <p>Beneath the waves he could still hear them calling</p>
    </div>
    <div class="gallery__tab gallery__tab4">
      <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/82/tulip.jpg" />
      <p>A present from a dewey morning</p>
    </div>
  </div>
</div>

<!--  gallery 3 -->
<div class="gallery">
  <ul class="gallery__nav gallery__nav3">
    <li class="is-active">Van</li>
    <li>Golden hour</li>
    <li>Flight</li>
    <li>Leaf droplets</li>
  </ul>

  <div class="gallery__tab-container gallery__tab-container3">
    <div class="gallery__tab gallery__tab1 is-active">
      <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/82/van.jpg" />
      <p>Get in. I'll explain on the road.</p>
    </div>
    <div class="gallery__tab gallery__tab2">
      <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/82/golden-hour.jpg" />
      <p>Sun's down. Hun's down.</p>
    </div>
    <div class="gallery__tab gallery__tab3">
      <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/82/flight-formation.jpg" />
      <p>Upwards we soared</p>
    </div>
    <div class="gallery__tab gallery__tab4">
      <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/82/leaf-droplets.jpg" />
      <p>Must have rained</p>
    </div>
  </div>
</div>
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CSS 

              
                body { font-family: sans-serif; }

.gallery__nav {
  padding: 0;
  display: -webkit-box;
  display: flex;
  flex-wrap: wrap;
}

.gallery__nav li {
  display: block;
  padding: 10px;
  border: 1px solid #DDD;
  margin-right: -1px;
  text-decoration: none;
  cursor: pointer;
  color: #08E;
}

.gallery__nav li:hover {
  background: #EEE;
}

.gallery__nav li.is-active {
  background: #19F;
  color: white;
}

.gallery__tab {
  display: none;
  margin-bottom: 40px;
}

.gallery__tab.is-active {
  display: block;
}

.gallery__tab img {
  display: block;
  height: 240px;
}
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JS 

              
                $('.gallery').each( function( index ) {
  var number = index + 1;
  var $activeNavItem = $( '.gallery__nav' + number + ' li.is-active' );
  var $activeTab = $( '.gallery__tab-container' + number + ' .gallery__tab.is-active' );
  console.log( index )
  $( '.gallery__nav' + number ).on( 'click', 'li', function( event ) {
    event.preventDefault();
    var $navItem = $( event.currentTarget );
    // update active nav item
    $activeNavItem.removeClass('is-active');
    $activeNavItem = $navItem.addClass('is-active');
    // update active tab
    $activeTab.removeClass('is-active');
    var tabNumber = $navItem.index() + 1; // 1,2,3..
    $activeTab = $( '.gallery__tab-container' + number + ' .gallery__tab' + tabNumber );
    $activeTab.addClass('is-active');
  });
});
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999px

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