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HTML

              
                <div class="ps_area_a photoswipe_gallery02">
  <figure>
    <a href="https://125naroom.com/wp/wp-content/uploads/2015/02/sora17.jpg" data-size="600x600"><img src="https://125naroom.com/wp/wp-content/uploads/2015/02/sora17.jpg" alt="sora 1"></a>
  </figure>
  <figure>
    <a href="https://125naroom.com/wp/wp-content/uploads/2015/02/sora16.jpg" data-size="600x600"><img src="https://125naroom.com/wp/wp-content/uploads/2015/02/sora16.jpg" alt="sora 2"></a>
  </figure>
  <figure>
    <a href="https://125naroom.com/wp/wp-content/uploads/2015/02/sora15.jpg" data-size="600x600"><img src="https://125naroom.com/wp/wp-content/uploads/2015/02/sora15.jpg" alt="sora 3"></a>
  </figure>
  <figure>
    <a href="https://125naroom.com/wp/wp-content/uploads/2015/02/sora10.jpg" data-size="600x600"><img src="https://125naroom.com/wp/wp-content/uploads/2015/02/sora10.jpg" alt="sora 4"></a>
  </figure>
  <figure>
    <a href="https://125naroom.com/wp/wp-content/uploads/2015/02/sora12.jpg" data-size="600x600"><img src="https://125naroom.com/wp/wp-content/uploads/2015/02/sora12.jpg" alt="sora 5"></a>
  </figure>
</div>


<div class="pswp" tabindex="-1" role="dialog" aria-hidden="true">
  <div class="pswp__bg"></div>
  <div class="pswp__scroll-wrap">
    <div class="pswp__container">
      <div class="pswp__item"></div>
      <div class="pswp__item"></div>
      <div class="pswp__item"></div>
    </div>
    <div class="pswp__ui pswp__ui--hidden">
      <div class="pswp__top-bar">
        <div class="pswp__counter"></div>
        <button class="pswp__button pswp__button--close" title="Close (Esc)"></button>
        <button class="pswp__button pswp__button--share" title="Share"></button>
        <button class="pswp__button pswp__button--fs" title="Toggle fullscreen"></button>
        <button class="pswp__button pswp__button--zoom" title="Zoom in/out"></button>
        <div class="pswp__preloader">
          <div class="pswp__preloader__icn">
            <div class="pswp__preloader__cut">
              <div class="pswp__preloader__donut"></div>
            </div>
          </div>
        </div>
      </div>
      <div class="pswp__share-modal pswp__share-modal--hidden pswp__single-tap">
        <div class="pswp__share-tooltip"></div>
      </div>
      <button class="pswp__button pswp__button--arrow--left" title="Previous (arrow left)"></button>
      <button class="pswp__button pswp__button--arrow--right" title="Next (arrow right)"></button>
      <div class="pswp__caption">
        <div class="pswp__caption__center"></div>
      </div>
    </div>
  </div>
</div>

              
            
!

CSS

              
                /*==========
photoswipe_style
===========*/

.ps_area_a {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  max-width: 600px;
  margin: 0 auto;
}
.ps_area_a:after {
  content: "";
  display: block;
  width: 32.5%;
}
.ps_area_a figure {
  width: 32.5%;
  margin: 0 0 1.25%;
  transition-duration: 0.3s;
}
.ps_area_a figure a {
  display: block;
}
.ps_area_a figure a:hover {
  opacity: .7;
  cursor: zoom-in;
}
.ps_area_a figure a img {
  width: 100%;
  height: auto;
  vertical-align: top;
}
.ps_area_a figure figcaption {
  display: none;
}

/*==========
以下は不要です。
===========*/

body {
  padding: 50px 20px;
  font-family: YuGothic, "游ゴシック体", "Yu Gothic", "ヒラギノ角ゴ Pro", "Hiragino Kaku Gothic Pro", "メイリオ", Meiryo, "MS Pゴシック", "MS PGothic", sans-serif;
  font-size: 16px;
  letter-spacing: .025em;
  line-height: 1.8;
  margin: 0;
}

              
            
!

JS

              
                // .photoswipe_gallery02
(function() {
  var initPhotoSwipeFromDOM = function(gallerySelector) {

    // parse slide data (url, title, size ...) from DOM elements 
    // (children of gallerySelector)
    var parseThumbnailElements = function(el) {
      var thumbElements = el.childNodes,
          numNodes = thumbElements.length,
          items = [],
          figureEl,
          linkEl,
          size,
          item;

      for(var i = 0; i < numNodes; i++) {

        figureEl = thumbElements[i]; // <figure> element

        // include only element nodes 
        if(figureEl.nodeType !== 1) {
          continue;
        }

        linkEl = figureEl.children[0]; // <a> element

        size = linkEl.getAttribute('data-size').split('x');

        // create slide object
        item = {
          src: linkEl.getAttribute('href'),
          w: parseInt(size[0], 10),
          h: parseInt(size[1], 10)
        };



        if(figureEl.children.length > 1) {
          // <figcaption> content
          item.title = figureEl.children[1].innerHTML; 
        }

        if(linkEl.children.length > 0) {
          // <img> thumbnail element, retrieving thumbnail url
          item.msrc = linkEl.children[0].getAttribute('src');
        } 

        item.el = figureEl; // save link to element for getThumbBoundsFn
        items.push(item);
      }

      return items;
    };

    // find nearest parent element
    var closest = function closest(el, fn) {
      return el && ( fn(el) ? el : closest(el.parentNode, fn) );
    };

    // triggers when user clicks on thumbnail
    var onThumbnailsClick = function(e) {
      e = e || window.event;
      e.preventDefault ? e.preventDefault() : e.returnValue = false;

      var eTarget = e.target || e.srcElement;

      // find root element of slide
      var clickedListItem = closest(eTarget, function(el) {
        return (el.tagName && el.tagName.toUpperCase() === 'FIGURE');
      });

      if(!clickedListItem) {
        return;
      }

      // find index of clicked item by looping through all child nodes
      // alternatively, you may define index via data- attribute
      var clickedGallery = clickedListItem.parentNode,
          childNodes = clickedListItem.parentNode.childNodes,
          numChildNodes = childNodes.length,
          nodeIndex = 0,
          index;

      for (var i = 0; i < numChildNodes; i++) {
        if(childNodes[i].nodeType !== 1) { 
          continue; 
        }

        if(childNodes[i] === clickedListItem) {
          index = nodeIndex;
          break;
        }
        nodeIndex++;
      }



      if(index >= 0) {
        // open PhotoSwipe if valid index found
        openPhotoSwipe( index, clickedGallery );
      }
      return false;
    };

    // parse picture index and gallery index from URL (#&pid=1&gid=2)
    var photoswipeParseHash = function() {
      var hash = window.location.hash.substring(1),
          params = {};

      if(hash.length < 5) {
        return params;
      }

      var vars = hash.split('&');
      for (var i = 0; i < vars.length; i++) {
        if(!vars[i]) {
          continue;
        }
        var pair = vars[i].split('=');  
        if(pair.length < 2) {
          continue;
        }           
        params[pair[0]] = pair[1];
      }

      if(params.gid) {
        params.gid = parseInt(params.gid, 10);
      }

      return params;
    };

    var openPhotoSwipe = function(index, galleryElement, disableAnimation, fromURL) {
      var pswpElement = document.querySelectorAll('.pswp')[0],
          gallery,
          options,
          items;

      items = parseThumbnailElements(galleryElement);

      // define options (if needed)

      options = {

        // define gallery index (for URL)
        galleryUID: galleryElement.getAttribute('data-pswp-uid'),

        getThumbBoundsFn: function(index) {
          // See Options -> getThumbBoundsFn section of documentation for more info
          var thumbnail = items[index].el.getElementsByTagName('img')[0], // find thumbnail
              pageYScroll = window.pageYOffset || document.documentElement.scrollTop,
              rect = thumbnail.getBoundingClientRect(); 

          return {x:rect.left, y:rect.top + pageYScroll, w:rect.width};
        }

      };

      // PhotoSwipe opened from URL
      if(fromURL) {
        if(options.galleryPIDs) {
          // parse real index when custom PIDs are used 
          // http://photoswipe.com/documentation/faq.html#custom-pid-in-url
          for(var j = 0; j < items.length; j++) {
            if(items[j].pid == index) {
              options.index = j;
              break;
            }
          }
        } else {
          // in URL indexes start from 1
          options.index = parseInt(index, 10) - 1;
        }
      } else {
        options.index = parseInt(index, 10);
      }

      // exit if index not found
      if( isNaN(options.index) ) {
        return;
      }

      if(disableAnimation) {
        options.showAnimationDuration = 0;
      }

      // Pass data to PhotoSwipe and initialize it
      gallery = new PhotoSwipe( pswpElement, PhotoSwipeUI_Default, items, options);
      gallery.init();
    };

    // loop through all gallery elements and bind events
    var galleryElements = document.querySelectorAll( gallerySelector );

    for(var i = 0, l = galleryElements.length; i < l; i++) {
      galleryElements[i].setAttribute('data-pswp-uid', i+1);
      galleryElements[i].onclick = onThumbnailsClick;
    }

    // Parse URL and open gallery if it contains #&pid=3&gid=1
    var hashData = photoswipeParseHash();
    if(hashData.pid && hashData.gid) {
      openPhotoSwipe( hashData.pid ,  galleryElements[ hashData.gid - 1 ], true, true );
    }
  };

  // execute above function
  initPhotoSwipeFromDOM('.photoswipe_gallery02');
})();
              
            
!
999px

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