A HTML and CSS code snippet – a webpage hover effect where a gradient moves with the cursor

A HTML and CSS code snippet post which shows you a webpage hover effect where a gradient moves with the cursor. The snippet utilises the following css elements; css opacity, css transition and css transform. Sourced under a permissive license.

A HTML and CSS code snippet – image overlay mouse over or mouse hover

<button class="mouse-cursor-gradient-tracking">
  <span>Hover me</span>
</button>
<style>
.mouse-cursor-gradient-tracking {
  position: relative;
  background: #7983ff;
  padding: 0.5rem 1rem;
  font-size: 1.2rem;
  border: none;
  color: white;
  cursor: pointer;
  outline: none;
  overflow: hidden;
}

.mouse-cursor-gradient-tracking span {
  position: relative;
}

.mouse-cursor-gradient-tracking::before {
  --size: 0;
  content: '';
  position: absolute;
  left: var(--x);
  top: var(--y);
  width: var(--size);
  height: var(--size);
  background: radial-gradient(circle closest-side, pink, transparent);
  transform: translate(-50%, -50%);
  transition: width 0.2s ease, height 0.2s ease;
}

.mouse-cursor-gradient-tracking:hover::before {
  --size: 200px;
}
</style>

<script>
let btn = document.querySelector('.mouse-cursor-gradient-tracking');
btn.addEventListener('mousemove', e => {
  let rect = e.target.getBoundingClientRect();
  let x = e.clientX - rect.left;
  let y = e.clientY - rect.top;
  btn.style.setProperty('--x', x + 'px');
  btn.style.setProperty('--y', y + 'px');
});
</script>

Tags: CSS, HTML, CSS, CSS code snippet, html code snippet, cursor, hover effect, hover image, gradient, css opacity, css transition, css transform, radial-gradient

Image: Unsplash license

CC BY 4.0 added intro and tags – 30 Seconds of Code