G'day Christine,

Try this in the CSS section, and see if it affects the font at all:

.table-row-add.lf-link.ng-star-inserted {
  font-size: 24px;
  font-weight: 600;
}

Just in the CSS tab like so, with any other styling you have applied:

If you have multiple tables and only want to target that specific table, then you can add the field's ID to it:

#q1 .table-row-add.lf-link.ng-star-inserted {
  font-size: 24px;
  font-weight: 600;
}

The default appears to be 'bold' but you can play around with the font-weight values between 100-900. Let me know if this doesn't achieve what you need