diff --git a/combo/apps/wcs/templates/combo/wcs/tracking_code_input.html b/combo/apps/wcs/templates/combo/wcs/tracking_code_input.html
index a32a8754..be4e60ed 100644
--- a/combo/apps/wcs/templates/combo/wcs/tracking_code_input.html
+++ b/combo/apps/wcs/templates/combo/wcs/tracking_code_input.html
@@ -28,8 +28,8 @@
         <div id="_cell_error_{{ cell.id }}" class="errornotice" style="display: none">
           {% trans "The tracking code could not been found." %}
         </div>
-        <label class="sr-only" for="tracking-code">{% trans "Tracking Code" %}</label>
-        <input required id="tracking-code" name="code" placeholder="{% block input-placeholder-content %}{% trans 'ex: CNPHNTFB' %}{% endblock %}"/>
+        <label class="sr-only" for="tracking-code-{{cell.id}}">{% trans "Tracking Code" %}</label>
+        <input required class="tracking-code--input" id="tracking-code-{{cell.id}}" name="code" placeholder="{% block input-placeholder-content %}{% trans 'ex: CNPHNTFB' %}{% endblock %}"/>
         <button aria-label="{% trans 'Submit' %}">{% block submit-content %}{% trans 'Submit' %}{% endblock %}</button>
         <script>
           $(function() {