.GridviewTable {
    /* font, table border and table margins here */
    font-family: Arial, Tahoma, Verdana, sans-serif;
    font-size: 10pt;
    margin: 10px 0px 0px 0px;
    color: Black;
    width: 100% !important;
}

    .GridviewTable th {
        /* you don't need to use HeaderStyle-CssClass
    Just use the <th> element of the Gridview's overall CSSClass */
        background: #239c92 !important;
        color: #ffffff !important;
        /*border-bottom: solid thin black;*/
        padding-top: 4px;
        padding-bottom: 4px;
        padding-left: 6px;
        padding-right: 6px;
        border: 0;
        border-left: 1px solid #ffffff;
    }

    .GridviewTable td {
        padding-top: 4px;
        padding-bottom: 4px;
        padding-left: 6px;
        padding-right: 6px;
        border: 0;
        border-left: 1px solid #ffffff;
    }

    .GridviewTable .gridviewTdMedButton {
        padding-top: 1px;
        padding-bottom: 1px;
    }

    .GridviewTable tr {
        /* 
            any color or background-color set here will override
            the .AlternatingRow property so it's best not to use it
            if you want alternating rows to be different.
        */
    }

.headerStyle {
    color: #ffffff;
}

.GridviewTable a {
    color: White;
}

.TableRow {
    background-color: #d5e3dd;
}

.AlternatingRow {
    background-color: #ffffff;
}