删除表格单元格上用于嵌套表格的空间

我正在尝试做一个嵌套表，table当发生这种情况时，我将在我的第一个表上完成它：

这是我的HTML标记：

   <table class="quotationTable1">
    <%--Primary table--%>
    <tr>
        <td>
            <table>
                <%--Second Table--%>
                <tr>
                    <td style="width: 397px">
                        <table style="border-style: solid; border-color: inherit; border-width: medium; width: 452px;">
                            <%--Third Table--%>
                            <tr>
                                <th colspan="2" style="padding-top: 5px; background-color: black; color: white;">Job Quotation</th>
                            </tr>
                            <tr>
                                <td colspan="2" style="height: 26px;">
                                    <asp:Label ID="lblDescCategory" runat="server" Text="Category:"></asp:Label>
                                    <asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
                                </td>
                            </tr>
                            <tr>
                                <td colspan="2">
                                    <asp:Label ID="labelDescType" runat="server" Text="Type:"></asp:Label>
                                    <asp:Label ID="Label2" runat="server" Text="Label"></asp:Label>
                                </td>
                            </tr>
                            <tr>
                                <td style="width: 265px">
                                    <asp:Label ID="lblDescAddress" runat="server" Text="Address:"></asp:Label>
                                    <asp:Label ID="Label3" runat="server" Text="Label"></asp:Label>
                                </td>
                                </tr>
                                <tr>
                                <td style="width: 202px">
                                    <asp:Label ID="lblDescContacts" runat="server" Text="Contacts:"></asp:Label>
                                    <asp:Label ID="Label4" runat="server" Text="Label"></asp:Label>
                                </td>
                            </tr>
                            <tr>
                                <td colspan="2" style="height: 3px">
                                    <asp:Label ID="lblDescJobdesc" runat="server" Text="Job Description:"></asp:Label>
                                </td>
                            </tr>
                            <tr>
                                <td colspan="2" style="height: 59px">
                                    <asp:Label ID="Label6" runat="server" Text="Label"></asp:Label>
                                </td>
                            </tr>
                            <tr>
                                <td colspan="2">
                                    <asp:Label ID="Label5" runat="server" Text="File: "></asp:Label>
                                    <asp:LinkButton ID="LinkButton1" runat="server">LinkButton</asp:LinkButton>
                                </td>
                            </tr>
                            <tr>
                                <td colspan="2">
                                    <asp:Label ID="Label7" runat="server" Text="Finishing:"></asp:Label></td>
                            </tr>
                        </table>
                    </td>
                    <td>
                        <table style="width: 373px; position:relative;"><%--fourth table--%>
                            <tr>
                                   <th colspan="3" style="padding-bottom:5px; background-color: black; color: white; width: 400px;">Specification</th>
                            </tr>    
                        </table>
                    </td>
                </tr>
            </table>
        </td>
    </tr>
</table>

我怎样才能使我的第二个table 规范删除所有这些空格并与工作报价位于同一位置？