No bleeding on background

HTML

<div style="width:400px;border-radius:20px;border:1px solid red;overflow:hidden; ">
    <table style="width:100%;">
        <tr>
            <td>blah</td><td>more blah</td>
        </tr>
        <tr style="background-color:lightblue;">
            <td>blah</td><td>more blah</td>
        </tr>
        <br/><br/><br/><br/>
    </table>
</div>