How to resize a matrix?

Hello

I have a matrix (input120) in my form: https://form.jotform.com/62445491741963 and i would like to resize ) the 3 columns (approximately: 400, 75, 75)  I tried with both the field propoerties and  the design manager where i tried to change the CSS but it doesn't seem to work

Would you have any suggestion?

Many thanks

Sebastien

To achieve your requirement, please inject the custom CSS code below to your form.

#cid_120 table.form-matrix-table {

    max-width: 600px!important;

}

#cid_120 th.form-matrix-row-headers {

    width: 400px !important;

}

#cid_120 td.form-matrix-values {

    width: 75px;

}

Here's how it should look after.

If you need further assistance, please let us know.
Regards.