TableBorderless2.js

#tabela1 {
    border: 0px;
    margin: 0px auto;
    width: 500px;
    height: 600px;
}
#tabela2 {
    border: 1px solid;
    margin: 0px auto;
    width: 500px;
    height: 600px;
}

<table id="tabela1">
    <tr>
        <td>
            texto1
        </td>
    </tr>
    <tr>
        <td>
            texto2
        </td>
    </tr>
</table>
<table id="tabela2">
    <tr>
        <td>
            texto1
        </td>
    </tr>
    <tr>
        <td>
            texto2
        </td>
    </tr>
</table>

<!-- https://pt.stackoverflow.com/q/47707/101