<!DOCTYPE html>
<html>
<head>
<title>Title of the document</title>
<style>
#blink {
font-size: 30px;
font-weight: bold;
font-family: sans-serif;
color: #1c87c9;
transition: 0.4s;
}
</style>
</head>
<body>
<p id="blink">Blinking Effect with JavaScript</p>
<script type="text/javascript">
var blink = document.getElementById('blink');
setInterval(function() {
blink.style.opacity = (blink.style.opacity == 0 ? 1 : 0);
}, 1000);
</script>
</body>
</html>