JSFiddle - React, Tailwind, and code Playground

by lichangwei

HTML

<div id="shadow"></div>

CSS

#shadow{
    position: absolute;
    top: 100px;
    left: 100px;
    width: 0;
    height: 0;
    border-radius: 5px;
    box-shadow: 0 0 40px 20px #000;
}

JavaScript

$(function(){
    var $shadow = $('#shadow');
    $(document).mousemove(function(e){
        $shadow.css( {left: e.clientX, top: e.clientY} );
    }).click(function(){
        alert( this.tagName );
    });
});