JSFiddle - React, Tailwind, and code Playground

by Alexander

CSS

html,body {
  height: 100%;
  margin: 0;
  background: radial-gradient(circle closest-side at 50% 50%, #fff -10%, #121, #000 40%);
}

JavaScript

(function($){
  $(document).mousemove(
    function(e){
      var X = e.pageX;
      var Y = e.pageY;
      $('body').css('background','radial-gradient(circle closest-side at '+X+'px '+Y+'px, #fff -10%, #121, #000 50%)');
    }
  );
})(jQuery);