IE8的td的渐进色的问题

td3，4，5的左右总是有一条白色的竖线 （在IE8下，其他浏览器没有这个问题）
<html>
<head>
    <title></title>
    <style>
        TABLE.center
        {
            margin: 0px auto;
            width: 96%;
        }
        TR Td
        {
            filter: progid:DXImageTransform.Microsoft.gradient(enabled='true',GradientType=0,startColorstr='#FBFBFB', endColorstr='#D8CDE1');
        }
        TABLE
        {
            border-bottom: 1px solid;
            border-left: 1px solid;
            padding-bottom: 0px;
            margin: 0px;
            padding-left: 0px;
            border-spacing: 0px;
            padding-right: 0px;
            border-collapse: collapse;
            border-top: 1px solid;
            border-right: 1px solid;
            padding-top: 0px;
        }
        BODY
        {
            margin: 0px;
            margin-right:0px;
        }
    </style>
</head>
<body>
    <table class="center">
        <tr>
            <td>
                1
            </td>
            <td>
                2
            </td>
            <td>
                3
            </td>
            <td>
                4
            </td>
            <td>
                5
            </td>
            <td>
                6
            </td>
            <td>
                7
            </td>
        </tr>
    </table>
</body>
</html>