font.html

{% extends "base.html" %}
{% block style %}

<style>
    @font-face {
        font-family: 'ca-font';
        src: url('{{url_for("static",filename="font/ca_font.woff")}}');
    }
    .stonefont {
          font-family: ca-font;
          font-size:16px;
    }

</style>
{% endblock style %}
{% block link %}

{% endblock link %}

{% block content %}
<div class="container">

   <span class="stonefont"> {{new_num_str}}</span>

</div>

{% endblock %}