Is it possible to center labels over the appropriate choices on a likert matrix question?

Here's what I have currently using the "Add Labels" option.
This is roughly what I'm hoping for, which is preferable from a psychometric perspective.
I'm by no means experienced with coding, but I've also tried using HTML and CSS to make the labels myself. This is as close as I've gotten:
Unfortunately, this solution is not stable across different window/screen sizes. Here's how it looks on a smaller screen:
Any help would be much appreciated! I am admittedly a bit frustrated but that is probably owed to my inexperience with pushing Qualtrics beyond its apparent limits like this.
My preference would be to make the native labels work if possible, as I've already implemented some code I found on here to repeat the labels throughout the matrix which does not seem to work with the manually-created labels.
let choice_table = this.getChoiceContainer();
let new_row = choice_table.insertRow(7); //Creates a new, empty row.
new_row.innerHTML = choice_table.rows[0].innerHTML; //the 0 row is the header row. Sets new row = header.
This question does not need to be mobile friendly as I'll be using embedded data to direct mobile participants to a separate mobile-friendly block.