Add stylesheet to replace labelcontent.

django_starfield/templates/django_starfield/stars.html

 {% load static %}
-<div class="django-starfield">
+<div class="django-starfield" id="django-starfield-{{ widget.name }}">
  {% for i in stars %}<!--
  --><input type="radio" name="{{ widget.name }}" id="{{ widget.name }}-{{ forloop.counter0 }}"
            value="{{ i }}" {% if widget.value == i %}checked="checked"{% endif %} /><!--
-     --><label for="{{ widget.name }}-{{ forloop.counter0 }}"
-               style="content: '\{{ codepoint }}'">{{ i }}</label><!--
+     --><label for="{{ widget.name }}-{{ forloop.counter0 }}">{{ i }}</label><!--
  -->{% endfor %}
 </div>
 <link rel="stylesheet" href="{% static 'django_starfield.css' %}" />
+<style type="text/css">
+ #django-starfield-{{ widget.name }} label {
+  content: '\{{ codepoint }}';
+ }
+</style>