Nothing worked for me (or at least I thought so until I fixed it) ... So my dirty decision was to use tables, 1 row, several columns. You may need to adjust the space / spacing.
Edit: A warning is a bad way to do something, but if nothing works, it can help.
<table border="0" > <tbody> <tr> <td><input name="gender" type="radio" value="male" checked> Male </td> <td><input name="gender" type="radio" value="female"> Female </td> </tr> </tbody> </table>
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