Change the sequence of label and input in the form html

I just setup my first form with Mautic and styled it with the attribute fields to match it’s look with the rest of my website, which uses Bootstrap 5 (simply by adding class=“form-control” to the input and class=“form-floating” to the field container).

I like the floating labels of Bootstrap 5, but their requirement is, that the must come before the (Floating labels · Bootstrap v5.3)

So where can I find the sourcecode to change the sequence of the input and labels, because the default behaviour of Mautic is, that it places the before the .