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

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>kuan-css</title>
  <link rel="stylesheet" href="./index.css">
  <style>
    .container {
      max-width: 800px;
      margin: 0 auto;
      padding: 20px;
      background-color: #eef2ff;
      display: grid;
      gap: 15px;
      grid-template-columns: repeat(auto-fill, 80px);
      justify-content: cent