问当在OS和Ubuntu上呈现PDF文档时，pdfkit使用不同的字体

EN

t = loader.get_template(self.template_name)
c = RequestContext(request, context)
html = t.render(c)

if format == "html":
    return HttpResponse(html, content_type="text/html")
elif format == "pdf":
    options = {
        'quiet': ''
    }
    pdf = pdfkit.from_string(smart_unicode(html), False, options=options)

    response = HttpResponse(pdf, content_type='application/pdf')
    response['Content-Disposition'] = '{0}; filename=Order Sheet.pdf'\
        .format(self.get_disposition())
    return response
else:
    return HttpResponse("Unknown format", content_type="text/html")

body {
    font-family: sans-serif;
    font-size: 13px;
    font-weight: normal;
}