Odoo 13 Community:

I'm trying to style an mass mail in Email Marketing and I've included a style tag to import a font:

<style class="o_default_snippet_text">
    @import url('https://fonts.googleapis.com/css2?family=Poppins&amp;display=swap');
 </style>

And it works just fine as I create the mailing, but as soon as I click "save", that tag is stripped.

How do I prevent it from being stripped?

I tried things like:

class MassMailing(models.Model):
    _inherit = "mailing.mailing"
    body_html = fields.Html(string='Body converted to be send by mail', sanitize_attributes=False, sanitize_tags=False, santitize_style=False)