Image gallery with captions and lightbox

by Génesis García Morilla

HTML

<section></section>
<div id="full" class="hide"><img></div>

CSS

body {
  font-family: Roboto, sans-serif;
  background-color: #e3e4e5;
}

section {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
}

figure {
  display: flex;
  flex-flow: column;
  padding: 12px 17px;
  background-color: white;
}

figure > img {
  width: 255px;
  height: 150px;
  text-align: center;
  line-height: 150px;
}

figure > img:hover {
  cursor: pointer;
  opacity: 0.7;
}

figcaption {
  padding-top: 8px;
  text-align: left;
}

#full {
  position: fixed;
  z-index: 1;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.9);
}

#full:hover {
  cursor: pointer;
}

#full > img {
  display: flex;
  margin: auto;
  width: 100%;
  height: 100%;
  max-width: 1024px;
  object-fit: contain;
  animation-name: zoom;
  animation-duration: 0.5s;
}

@keyframes zoom {
  from { transform: scale(0); }
  to { transform: scale(1); }
}

.hide {
  display: none;
}

JavaScript

const images = ['tfFaE9N', 'td2y5xn', 'OYIHgN8', 'dMobJqL']

// Figures with images and captions
document.querySelector('section').innerHTML = 
  images.reduce((html, img) => html += 
    `<figure>
      <img src="https://i.imgur.com/${img}.png">
      <figcaption>Example text</figcaption>
    </figure>`, '')

// Click on image to maximize it  
document.querySelectorAll('img')
.forEach($img => $img.onclick = () => {
  const $full = document.querySelector('#full')
  $full.classList.remove('hide')
  $full.querySelector('img').src = $img.src
  $full.onclick = () => $full.classList.add('hide')
})