3 Column Flex Image Gallery With Lightbox

gistfile1.txt

<div class="container-all read-more-wrap mx-1">
   <div class="containered ${clssName}">
      <a class="example-image-link" href="${image}" data-lightbox="${title}" data-title="${bigTitle}">
          <img src="${image}" loading="lazy" alt="${bigDesc}">
      </a>
      <span class="title">${bigTitle}</span>
      <span class="text">${bigDesc}</span>
  </div>
</div>

style.css

.container-all{
  width: fit-content;
  margin: 20px auto;
  height: auto;
  overflow: auto;
}
.containered{
  width: calc(33% - 6px);
  overflow:hidden;
  height: fit-content;
  margin:3px;
  padding: 0;
  display:block;
  position:relative;
  float:left;
}
.containered img{
  height: 400px;
  width: 100%;
  object-fit: cover;
  transition-duration: .3s;
  max-width: 100%;
  display:block;
  overflow:hidden;
  cursor:pointer;
}
.containered .title{
  position:absolute;
  display:block;
  cursor:pointer;
  top: 35%;
  display: none;
  left: 50%;
  width: 100%;
  text-align: center;
  transform: translate(-50%, -50%);
  font-weight: bold;
  font-size: 1.6em;
  text-shadow: 1px 5px 10px black;
  transition-duration: .3s;
}
.containered .text{
  position:absolute;
  top: 70%;
  cursor:pointer;
  max-width: 80%;
  text-align:center;
  left: 50%;
  text-shadow: 1px 5px 10px black;
  font-size: 1em;
  display:none;
  margin-right: -50%;
  transition-duration: .3s;
  transform: translate(-50%, -50%) 
}
.containered:hover img{
  transform: scale(1.2);
  transition-duration: .3s;
  filter: grayscale(50%);
  opacity: .7;
}
.containered:hover span{
  color:white;
  display: block;
  transition-duration: .3s;
}
@media only screen and (max-width: 900px) {
    .containered {
        width: calc(50% - 6px);
    }
}
@media only screen and (max-width: 400px) {
    .containered {
        width: 100%;
    }
}