<!DOCTYPE html>
<html>

<head>
  <meta http-equiv="Content-type" content="text/html; charset=utf-8" />
  <title>Sierpinski Triangle</title>
  <style>
    .container {
      position: absolute;
      transform-origin: 0 0;
      left: 50%;
      top: 50%;
      width: 10px;
      height: 10px;
      background: #eee;
    }

    .dot {
      position: absolute;
      background: #61dafb;
      font: normal 15px sans-serif;
      text-align: center;
      cursor: pointer;
    }

    .dot:hover {
      backgrou