<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Sticky</title>
<style>
html, body {
margin: 0;
padding: 0;
}
.block {
height: 100px;
}
#parent {
height: 2000px;
}
.myElement {
position: sticky;
top: -1px;
height: 60px;
display: flex;
align-items: center;
justify-content: center;
background-color: skyblue;
color: snow;
}
/* styles for when the header is in sticky mode */
.myElement.is-pinned {
color: red;
}
</style>
</head>
<body>
<div id="parent">
<div class="block"></div>
<div class="myElement">Tittle</div>
</div>
</body>
<script>
const el = document.querySelector(".myElement")
const observer = new IntersectionObserver(
([e]) => e.target.classList.toggle("is-pinned", e.intersectionRatio < 1), {
threshold: [1]
}
);
observer.observe(el);
</script>
</html>
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