Remove spaces between Checkbox and label in Checkboxlist

 I'm having a checkbox list control in my aspx page. For some reason, spaces are generated between the checkbox and the label for the checkbox. Is there anyway to remove the spaces?

Here is my code:
<style type="text/css">
.chkStyle {

    font: 11px Verdana, Arial, Helvetica, sans-serif;
    vertical-align:top;
    height: 10px;
    padding-left: 5px;
    margin: 0px;
    white-space: nowrap;

}
</style>

<asp:CheckBoxList ID="chkScheduledFor" runat="server"
                                                CellSpacing="0" CellPadding="0" BorderWidth="0 ...