Spipu (./2) :
have you try to use a div with width and border-bottom ?

I've used the following:

<div style="margin: 10px 20px 0px 10px; border-bottom-style: solid; border-bottom-width: 1px;"></div>

but it doesn't seem to be recognized by html2pdf. I'm still looking for a solution.

Thanks.

Bob