table tr td 布局九宫格

table tr td 布局九宫格

1）实现效果

2）代码

<!DOCTYPE html>
<html lang="zh">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>布局</title>
  <style>
    * {
      margin: 0;
      padding: 0;
    }
    
    table {
      border-collapse: collapse;
      text-align: center;
    }
    .table tr {
      border: none;
    }
    .table td {
      width: 50px;
      height: 50px;
      border: 5px inset blue;
    }
    .table td:hover {
      cursor: pointer;
      border: 5px outset red;
    }
  </style>
</head>
<body>
  <table class="table">
    <tr>
      <td>1</td>
      <td>2</td>
      <td>3</td>
      </tr>
    <tr>
      <td>4</td>
      <td>5</td>
      <td>6</td>
    </tr>
    <tr>
      <td>7</td>
      <td>8</td>
      <td>9</td>
    </tr>
  </table>
</body>
</html>