cooperative-market/beesdoo_website_theme/views/assets.xml

<odoo>
  <!-- We add the css stylesheet -->
  <template id="assets_frontend" name="beesdoo_website_theme_website_assets"
    inherit_id="website.assets_frontend">
    <xpath expr="." position="inside">
      <link rel="stylesheet"
        href="/beesdoo_website_theme/static/src/less/beesdoo_website_design.less"/>
    </xpath>
  </template>
</odoo>