悬停时突出显示整个表行

<style>
    table {
        border-collapse: collapse;
        width: 100%;
    }
    th, td {
        padding: 8px;
        text-align: left;
        border-bottom: 1px solid #ddd;
    }
    tr:hover {
        background-color: #f5f5f5;
    }
</style>

<table>
    <tr>
        <th>姓名</th>
        <th>年龄</th>
        <th>性别</th>
    </tr>
    <tr>
        <td>张三</td>
        <td>25</td>
        <td>男</td>
    </tr>
    <tr>
        <td>李四</td>
        <td>30</td>
        <td>女</td>
    </tr>
    <tr>
        <td>王五</td>
        <td>28</td>
        <td>男</td>
    </tr>
</table>