Write me a code to add to a Google website I made that will make a ball fallow the mouse pointer
To make a ball follow the mouse pointer in a Google website, you can use JavaScript and HTML. Here's an example code:
``` 
<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8">
    <title>Ball Following Mouse</title>
    <style>
      #ball {
        width: 50px;
        height: 50px;
        border-radius: 50%;
        background-color: red;
        position: absolute;
      }
    </style>
  </head>
  <body>
    <div id="ball"></div>
    <script>
      var ball = document.getElementById("ball");
      document.addEventListener("mousemove", function(event) {
        var x = event.clientX;
        var y = event.clientY;
        ball.style.left = (x - 25) + "px";
        ball.style.top = (y - 25) + "px";
      });
    </script>
  </body>
</html>
``` 
This code creates a red ball with a diameter of 50 pixels and sets its position to absolute. Then, it adds an event listener to the document that listens for mouse movements. When the mouse moves, the event listener gets the X and Y coordinates of the mouse pointer and sets the position of the ball to those coordinates minus half of the ball's diameter (to center the ball on the pointer).