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                <header class="parallax-wrapper">
  <div class="parallax">
    <h1>This header has parallax effect</h1>
  <p>Because vanilla JS is awesome and nobody should have to import a whole library when you only need to write 6 lines of code. Voilà.</p>


                .parallax-wrapper {
  overflow-y: hidden;

.parallax {
  background-image: url('');
  background-size: cover;
  background-position: center;
  height: 250px;

/* Only for the pen */
html, body {
  margin: 0;
  min-height: 100%;
  font-family: sans-serif;

main {
  min-height: 500px;
  background-color: #2b2d42;

.parallax {
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: center;

h1, p {
  margin: 0;
  color: #fff;

p {
  font-weight: 500;
  font-size: 1.2em;
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
  line-height: 1.6;
  padding-top: 80px;


                // Parallax effect
// Adapted from @ilonacodes article ->

// Update : added throttle to increase performance
window.addEventListener('scroll', throttle(parallax, 14));

function throttle(fn, wait) {
  var time =;
  return function() {
    if ((time + wait - < 0) {
      time =;

function parallax() {
  var scrolled = window.pageYOffset;
  var parallax = document.querySelector(".parallax");
  // You can adjust the 0.4 to change the speed
	var coords = (scrolled * .4) + 'px' = 'translateY(' + coords + ')';