Hover underline animation

CSS, Animation · Oct 11, 2021

Creates an animated underline effect when the user hovers over the text.

  • Use display: inline-block to make the underline span just the width of the text content.
  • Use the ::after pseudo-element with width: 100% and position: absolute to place it below the content.
  • Use transform: scaleX(0) to initially hide the pseudo-element.
  • Use the :hover pseudo-class selector to apply transform: scaleX(1) and display the pseudo-element on hover.
  • Animate transform using transform-origin: left and an appropriate transition.
  • Remove the transform-origin property to make the transform originate from the center of the element.

Hover this text to see the effect!

<p class="hover-underline-animation">Hover this text to see the effect!</p>
.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;

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