Making NetCommunity donation forms responsive/mobile

Pat Sebree:
I am working on making our donation forms responsive and have run into one issue that I have not been able to resolve. At the smallest sizes, I have not been able to get the "required" asterisk to float to the right of the donation amount box. There is an unused <td> that I can't target. Can anyone tell me if that is the issue and if it is how to address that? You can check it out at: https://wgm.org/r-d-form-h

Thanks!