CSS border radius for dotted border

Question

I'm using dotted borders with round corners but I'm getting a problem. The corners are in a deeper color than the side borders. I want all to be of the same color.

If you see the output of my code then you could understand the problem. heres my code:

<form action="checklogin.php" method="post">
    <table style="border:1px dotted #0000ff;-moz-border-radius:7px;
        -webkit-border-radius:7px;border-radius:7px;" align="center">
        <caption><b>Admin Login</b></caption>
        <tr>
            <td>Username : </td>
            <td><input name="username" id="username" type="text" /></td>
        </tr>
        <tr>
            <td>Password : </td>
            <td><input name="password" id="password" type="password" /></td>
        </tr>
        <tr>
            <td></td>
            <td><input name="submit" id="submit" type="submit" value="Log in" /></td>
        </tr>
    </table>
</form>

Please tell me how can I fix it.

Thanks.

[ RESOLVED: Thank you so much everybody for your kind replies.]

Solution

The solid corners are a limitation of Firefox (and other Gecko-based browsers). MDN says:

Dotted and dashed rounded border corners are rendered as solid in Gecko; see bug 382721.