<table>
    <tbody>
        <tr>
            <td><b>Please enter your username and password:</b></td></tr>

        </tr>
        <tr>
            <td>
                <asp:Label ID="Label1" runat="server" Text="Username:"></asp:Label>
                <asp:TextBox ID="usernameTextBox" runat="server"> </asp:TextBox>
            </td>
        </tr>
        <tr>
            <td>
                <asp:Label ID="Label2" runat="server" Text="Password:"></asp:Label>
                <asp:TextBox ID="passwordTextBox" TextMode="Password" runat="server"> </asp:TextBox>

            </td>
        </tr>

        <tr>
            <td>
                <asp:Button ID="submitButton" OnClick="submitButton_Click" runat="server" Text="Submit"></asp:Button>
            </td>
        </tr>
          <tr>
            <td>
                <asp:Label ID="errorLabel" runat="server" Text=""></asp:Label>
            </td>
        </tr>
    </tbody>
</table>