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+### Hover underline animation
+
+Creates an animated underline effect when the text is hovered over.
+
+<small>**Credit:** https://flatuicolors.com/</small>
+
+#### HTML
+
+```html
+<p class="hover-underline-animation">Hover this text to see the effect!</p>
+```
+
+#### CSS
+
+```css
+.hover-underline-animation {
+  display: inline-block;
+  position: relative;
+  color: #0087ca;
+}
+.hover-underline-animation::after {
+  content: '';
+  position: absolute;
+  width: 100%;
+  transform: scaleX(0);
+  height: 2px;
+  bottom: 0;
+  left: 0;
+  background-color: #0087ca;
+  transform-origin: bottom right;
+  transition: transform 0.25s ease-out;
+}
+.hover-underline-animation:hover::after {
+  transform: scaleX(1);
+  transform-origin: bottom left;
+}
+```
+
+#### Demo
+
+<div class="snippet-demo">
+  <p class="snippet-demo__hover-underline-animation">Hover this text to see the effect!</p>
+</div>
+
+<style>
+.snippet-demo__hover-underline-animation {
+  display: inline-block;
+  position: relative;
+  color: #0087ca;
+}
+.snippet-demo__hover-underline-animation::after {
+  content: '';
+  position: absolute;
+  width: 100%;
+  transform: scaleX(0);
+  height: 2px;
+  bottom: 0;
+  left: 0;
+  background-color: #0087ca;
+  transform-origin: bottom right;
+  transition: transform 0.25s ease-out;
+}
+.snippet-demo__hover-underline-animation:hover::after {
+  transform: scaleX(1);
+  transform-origin: bottom left;
+}
+</style>
+
+#### Explanation
+
+1. `display: inline-block` makes the block `p` an `inline-block` to prevent the underline from
+spanning the entire parent width rather than just the content (text).
+2. `position: relative` on the element establishes a Cartesian positioning context for psuedo-elements.
+3. `::after` defines a pseudo-element.
+4. `position: absolute` takes the pseudo element out of the flow of the document and positions it in relation to the parent.
+5. `width: 100%` ensures the pseudo-element spans the entire width of the text block.
+6. `transform: scaleX(0)` initially scales the pseudo element to 0 so it has no width and is not visible.
+7. `bottom: 0` and `left: 0` position it to the bottom left of the block.
+8. `transition: transform 0.25s ease-out` means changes to `transform` will be transitioned over 0.25 seconds
+with an `ease-out` timing function.
+9. `transform-origin: bottom right` means the transform anchor point is positioned at the bottom right of the block.
+10. `:hover::after` then uses `scaleX(1)` to transition the width to 100%, then changes the `transform-origin`
+to `bottom left` so that the anchor point is reversed, allowing it transition out in the other direction when
+hovered off.
+
+#### Browser support
+
+<span class="snippet__support-note">✅ No caveats.</span>
+
+* https://caniuse.com/#feat=transforms2d
+* https://caniuse.com/#feat=css-transitions