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CSS

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Babel includes JSX processing.

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HTML 

              
                <!-- PhotoSwipe -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/photoswipe/5.4.2/umd/photoswipe.umd.min.js" integrity="sha512-xH3c1Jh7FbAehFlrbmiFLL7fm2YxZRXtRJ0O9Kc+RkCW5VLkLeARPe8RwgCfzYt4N1JRqzxZtBMgsJzLehA4Tw==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/photoswipe/5.4.2/umd/photoswipe-lightbox.umd.min.js" integrity="sha512-OB04yghyy2BT/S1t5HihjY4Jw9Us/5Fw1p5Jw41DIx71Kx+G4SjiPpd3n2ecsYAp7gJL0saH0J6k5elzVHp2+Q==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/photoswipe/5.4.2/photoswipe.min.css" integrity="sha512-LFWtdAXHQuwUGH9cImO9blA3a3GfQNkpF2uRlhaOpSbDevNyK1rmAjs13mtpjvWyi+flP7zYWboqY+8Mkd42xA==" crossorigin="anonymous" referrerpolicy="no-referrer" />

<!-- CSS -->
<style  type="text/css">
#gallery {
  width: 95%;
  margin: 1em auto; /* 上下,左右 */
  display: flex;/* 親要素 flex container */
  flex-flow: wrap;/* 折り返し */
}
#gallery img {
  width: 100%;
  height: auto;
  border: none;
  max-width: 310px;/* サイズ調整 */
  margin: 1em 0;
  padding: 8px; /* 写真外枠 */
  background: #fff;
  box-shadow: 0px 5px 5px rgba(0, 0, 0, 0.7);
}
#gallery p {
  flex: 270px;/* 子要素 flex Item */
}
.pic-r1 {
  z-index: 2;
  transform: rotate(-10deg);
}
.pic-r2 {
  z-index: 5;
  transform: rotate(15deg);
}
.pic-r3 {
  z-index: 3;
  transform: rotate(5deg);
}
.pic-r4 {
  z-index: 5;
  transform: rotate(-3deg);
}
.pic-r5 {
  z-index: 5;
  animation: animation-1 6s infinite ease 1s both;
}
@keyframes animation-1 {
  0% {
    transform: rotate(8deg);
  }
  50% {
    transform: rotate(-15deg);
  }
  100% {
    transform: rotate(8deg);
  }
}
</style>

<!-- 画像挿入 -->
<center>
<div  id="gallery">
<p  class="pic-r1">
<a  href="https://livedoor.blogimg.jp/hakumo13-twk069wv/imgs/8/a/8ad9ca5b.jpg" data-pswp-width="" data-pswp-height="">
<img  src="https://livedoor.blogimg.jp/hakumo13-twk069wv/imgs/8/a/8ad9ca5b.jpg" style="pointer-events: none">
</a>
</p>

<p  class="pic-r2">
<a  href="https://livedoor.blogimg.jp/hakumo13-twk069wv/imgs/f/9/f9d68860.jpg" data-pswp-width="" data-pswp-height="">
<img  src="https://livedoor.blogimg.jp/hakumo13-twk069wv/imgs/f/9/f9d68860.jpg" style="pointer-events: none">
</a>
</p>

<p  class="pic-r3">
<a  href="https://livedoor.blogimg.jp/hakumo13-twk069wv/imgs/1/e/1e245521.png" data-pswp-width="" data-pswp-height="">
<img  src="https://livedoor.blogimg.jp/hakumo13-twk069wv/imgs/1/e/1e245521.png" style="pointer-events: none">
</a>
</p>
</div><!-- gallery -->
</center>

<!-- PhotoSwipe -->
<script type="text/javascript">
var lightbox = new PhotoSwipeLightbox({
        gallery: '#gallery',
        children: 'a',
        pswpModule: PhotoSwipe
});
lightbox.init();
</script>

<!-- 画像サイズを取得して属性に挿入 -->
<script type="text/javascript">
document.addEventListener('DOMContentLoaded', function () {
    const galleries = gallery.querySelectorAll('a');
    galleries.forEach((el) => {
        loadImage(el.href).then(img => {
            el.setAttribute('data-pswp-width', img.naturalWidth);
            el.setAttribute('data-pswp-height', img.naturalHeight);
            el.firstElementChild.removeAttribute('style');
        });
    });
});

function loadImage(src) {
    return new Promise((resolve, reject) => {
        const img = new Image();
        img.onload = () => resolve(img);
        img.onerror = (e) => reject(e);
        img.src = src;
    });
}
</script>
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