Reveal additional content on hover

Fairly often, I've found myself needing to display additional content on hover. A while ago, I stumbled upon a pretty cool effect, where you can push the image and title of a card upwards to reveal more content. Achieving this effect is pretty simple, too.

The trick is using overflow: hidden on the card to hide elements that overflow vertically. Then, you can use the :hover and :focus-within pseudo-class selectors to change the card's styling if the element is hovered, focused, or any of its descendants are focused.

Then, use a transition to create a transition effect. Using the margin and padding properties, you can push the image and title upwards to reveal additional content.

<div class="card">
  <img src="https://picsum.photos/id/404/367/267"/>
  <h3>Lorem ipsum</h3>
  <div class="focus-content">
    <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit.<br/> <a href="#">Link to source</a>
    </p>
  </div>
</div>

.card {
  width: 300px;
  height: 280px;
  padding: 0;
  box-shadow: 0 2px 4px 0 rgba(0,0,0,0.1);
  border-radius: 8px;
  box-sizing: border-box;
  overflow: hidden;
}

.card * {
  transition: 0.3s ease all;
}

.card img {
  margin: 0;
  width: 300px;
  height: 224px;
  object-fit: cover;
  display: block;
}

.card h3 {
  margin: 0;
  padding: 12px 12px 48px;
  line-height: 32px;
  font-weight: 500;
  font-size: 20px;
}

.card .focus-content {
  display: block;
  padding: 8px 12px;
}

.card p {
  margin: 0;
  line-height: 1.5;
}

.card:hover img, .card:focus-within img {
  margin-top: -80px;
}

.card:hover h3, .card:focus-within h3 {
  padding: 8px 12px 0;
}