相关疑难解决方法(0)

div {
    width: 100px;
    height: 70px;
    border: 1px solid blue;
    overflow: auto;
}

<div>
    <table id="my_table">
        <tr id='row_1'><td>1</td></tr>
        <tr id='row_2'><td>2</td></tr>
        <tr id='row_3'><td>3</td></tr>
        <tr id='row_4'><td>4</td></tr>
        <tr id='row_5'><td>5</td></tr>
        <tr id='row_6'><td>6</td></tr>
        <tr id='row_7'><td>7</td></tr>
        <tr id='row_8'><td>8</td></tr>
        <tr id='row_9'><td>9</td></tr>
    </table>
</div>