JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE html>
<html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <title>Test Border Glow</title>
</head>
<body>
    <img src="http://www.google.com/images/icons/ui/doodle_plus/doodle_plus_google_logo_on_grey.gif" id="holder">
</body>
</html>

CSS

#holder {
    margin: 50px 0 0 50px;
}

JavaScript

var box;
         
window.onload = function () 
{
    box = document.getElementById('holder');
    var intval = 25;
    box.onclick = function()
    {
     var maxGlow = 15;
     for (var i = 0; i <= maxGlow; i++) {
         setTimeout("box.style.boxShadow = '0px 0px " + i + "px #3C6';", intval * i);
         setTimeout("box.style.boxShadow = '0px 0px " + (maxGlow - i) + "px #3C6';", ((maxGlow * 2 * intval) + intval) + (intval * i) );
     }
    };
};