<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8" />
  <meta name="google" content="notranslate" />
  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
  <title>Grid Fundamentals</title>
  <style>
    body {
      font-family: sans-serif;
    }

    .container {
      display: flex;
      justify-content: center;
      align-items: center;
      flex-direction: column;
      height: 100vh;
      background-color: #f2f2f2;
    }

    .item {
      width: 200px;
      mar