Adding css to new template in desktop version

I’m trying the desktop version of manager io and I’m trying to adapt the invoice template in html. In your guide I read it’s possible to change this and adding a css sheet for it. Unfortunately I can’t find a way to upload the css file.
Am I missing the link? I’m using Manager 15.6.92 now.

You cannot add a css stylesheet file anymore, but you can add a style at the top of your template like this:

<style>
    .myfont { font-size: 10pt; font-family: Verdana; }
</style>

and then use where applicable

class="myfont"

ok thanks for response

Apparently there is a way.