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HTML

              
                <link href="https://fonts.googleapis.com/css2?family=Roboto&display=swap" rel="stylesheet">
<h1>Card Image with description on :hover</h1>
<div class="cards">
  <div class="card">
    <h2 class="card-title">Seal</h2>
    <img src="https://images.unsplash.com/photo-1591485423007-765bde4139ef?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=800&q=80" alt="">
    <p class="card-desc">Pinnipeds, commonly known as seals,[a] are a widely distributed and diverse clade of carnivorous, fin-footed, semiaquatic marine mammals. They comprise the extant families Odobenidae (whose only living member is the walrus), Otariidae (the eared seals: sea lions and fur seals), and Phocidae (the earless seals, or true seals).</p>
  </div>
  <div class="card">
    <h2 class="card-title">Lion</h2>
    <img src="https://images.unsplash.com/photo-1534188753412-3e26d0d618d6?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=634&q=80" alt="">
    <p class="card-desc">The lion (Panthera leo) is a species in the family Felidae and a member of the genus Panthera. It has a muscular, deep-chested body, short, rounded head, round ears, and a hairy tuft at the end of its tail. It is sexually dimorphic; adult male lions have a prominent mane.</p>
  </div>
  <div class="card">
    <h2 class="card-title">Hawk</h2>
    <img src="https://images.unsplash.com/photo-1534251369789-5067c8b8602a?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=634&q=80" alt="">
    <p class="card-desc">Hawks are a group of medium-sized diurnal birds of prey of the family Accipitridae. Hawks are widely distributed and vary greatly in size.
      The subfamily Accipitrinae includes goshawks, sparrowhawks, sharp-shinned hawks and others. This subfamily are mainly woodland birds with long tails and high visual acuity. They hunt by dashing suddenly from a concealed perch.</p>
  </div>
</div>
              
            
!

CSS

              
                * {
  margin: 0;
  padding: 0;
  font-family: "Roboto", sans-serif;
}

body {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  background-color: #34495e;
}

.cards {
  width: 100%;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-around;
}

.card {
  margin: 40px;
  position: relative;
  max-width: 250px;
  max-height: 350px;
  box-shadow: 0 40px 60px -6px black;
}

.card-title {
  display: block;
  text-align: center;
  color: #fff;
  background-color: #6184a8;
  padding: 2%;
  border-top-right-radius: 4px;
  border-top-left-radius: 4px;
}

.card img {
  width: 100%;
  height: 98%;
  object-fit: cover;
  display: block;
  position: relative;
}

.card-desc {
  display: block;
  font-size: 1.2rem;
  position: absolute;
  height: 0;
  top: 0;
  opacity: 0;
  padding: 18px 8%;
  background-color: white;
  overflow-y: scroll;
  transition: 0.8s ease;
}

.card:hover .card-desc {
  opacity: 1;
  height: 100%;
}

h1 {
  font-size: 2.8rem;
  color: #fff;
  margin: 40px 0 20px 0;
  text-align: center;
}

              
            
!

JS

              
                /* NOTHING TO SEE HERE */
              
            
!
999px

Console