grid布局grid-template-rows 和 grid-template-columns ```HTML

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <style>
      * {
        margin: 0;
        padding: 0;
        text-align: center;
      }
      div {
        width: 600px;
        height: 600px;
        /* 在此填写代码 */
        display: grid;
        grid-template-rows: 1fr 2fr 3fr;
        grid-template-columns: 3fr 2fr 1fr;
      }
      p {
        display: flex;
        align-items: center;
        justify-content: center;
      }
      p:nth-child(1) {
        background-color: red;
      }

      p:nth-child(2) {
        background-color: orange;
      }

      p:nth-child(3) {
        background-color: yellow;
      }

      p:nth-child(4) {
        background-color: green;
      }

      p:nth-child(5) {
        background-color: cyan;
      }

      p:nth-child(6) {
        background-color: blue;
      }

      p:nth-child(7) {
        background-color: blueviolet;
      }

      p:nth-child(8) {
        background-color: pink;
      }

      p:nth-child(9) {
        background-color: tan;
      }
    </style>
  </head>

  <body>
    <div>
      <p>1</p>
      <p>2</p>
      <p>3</p>
      <p>4</p>
      <p>5</p>
      <p>6</p>
      <p>7</p>
      <p>8</p>
      <p>9</p>
    </div>
  </body>
</html>

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