<h1>CSS Grid gallery</h1>
<div class="container">

  <div class="gallery-container w-3 h-2">
    <div class="gallery-item">
      <div class="image">
        <img src="http://source.unsplash.com/1600x900/?nature" alt="nature">
      </div>
      <div class="text">nature 1</div>
    </div>
  </div>

  <div class="gallery-container w-3 h-3">
    <div class="gallery-item">
      <div class="image">
        <img src="http://source.unsplash.com/1600x900/?people" alt="people">
      </div>
      <div class="text">people 2</div>
    </div>
  </div>

  <div class="gallery-container h-2">
    <div class="gallery-item">
      <div class="image">
        <img src="http://source.unsplash.com/1600x900/?sport" alt="sport">
      </div>
      <div class="text">sport 3</div>
    </div>
  </div>

  <div class="gallery-container w-2">
    <div class="gallery-item">
      <div class="image">
        <img src="http://source.unsplash.com/1600x900/?fitness" alt="fitness">
      </div>
      <div class="text">fitness 4</div>
    </div>
  </div>

  <div class="gallery-container w-4 h-1">
    <div class="gallery-item">
      <div class="image">
        <img src="http://source.unsplash.com/1600x900/?food" alt="food">
      </div>
      <div class="text">food 5</div>
    </div>
  </div>

  <div class="gallery-container">
    <div class="gallery-item">
      <div class="image">
        <img src="http://source.unsplash.com/1600x900/?travel" alt="travel">
      </div>
      <div class="text">travel 6</div>
    </div>
  </div>

  <div class="gallery-container h-2">
    <div class="gallery-item">
      <div class="image">
        <img src="http://source.unsplash.com/1600x900/?art" alt="art">
      </div>
      <div class="text">art 7</div>
    </div>
  </div>

  <div class="gallery-container">
    <div class="gallery-item">
      <div class="image">
        <img src="http://source.unsplash.com/1600x900/?cars" alt="cars">
      </div>
      <div class="text">cars 8</div>
    </div>
  </div>


</div>
body {
  margin: 20px;
  padding: 0;
  text-align: center;
}
.container{
  display: grid;
  grid-template-columns: repeat(6,1fr);
  grid-auto-rows: 100px 300px;
  grid-gap: 10px;
  grid-auto-flow: dense;
}

.gallery-item{
  width: 100%;
  height: 100%;
  position: relative;
}

.gallery-item .image{
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.gallery-item .image img{
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 50%;
  cursor: pointer;
  transition:.5s ease-in-out;
}

.gallery-item:hover .image img{
  transform: scale(1.5);
}

.gallery-item .text{
  opacity: 0;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%,-50%);
  color: white;
  font-size: 25px;
  pointer-events: none;
  z-index: 4;
  transition: .3s ease-in-out;
  -webkit-backdrop-filter: blur(5px) saturate(1.8);
  backdrop-filter: blur(5px) saturate(1.8);
}

.gallery-item:hover .text{
  opacity: 1;
  animation: move-down .3s linear;
  padding: 1em;
  width: 100%;
}

.w-1{
  grid-column: span 1;
}

.w-2{
  grid-column: span 2;
}

.w-3{
  grid-column: span 3;
}

.w-4{
  grid-column: span 4;
}

.w-5{
  grid-column: span 5;
}

.w-6{
  grid-column: span 6;
}

.h-1{
  grid-row: span 1;
}

.h-2{
  grid-row: span 2;
}

.h-3{
  grid-row: span 3;
}

.h-4{
  grid-row: span 4;
}

.h-5{
  grid-row: span 5;
}

.h-6{
  grid-row: span 6;
}

@media screen and (max-width:500px){
  .container{
    grid-template-columns: repeat(1,1fr);
  }
  .w-1,.w-2,.w-3,.w-4,.w-5,.w-6{
  grid-column:span 1;
  }
  
  .h-1,.h-2,.h-3,.h-4,.h-5,.h-6{
  grid-row: span 3;
  }
}



@keyframes move-down{

  0%{
    top: 10%;
  }
  50%{
    top: 35%;
  }
  100%{
    top: 50%;
  }
}

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External JavaScript

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