diff --git a/groups/forms.py b/groups/forms.py
index f941e967..7696e0a7 100644
--- a/groups/forms.py
+++ b/groups/forms.py
@@ -4,4 +4,4 @@ from captcha.fields import CaptchaField
 class GroupsForm(forms.Form):
     username = forms.CharField(label="用户名", max_length=128, widget=forms.TextInput(attrs={'class': 'form-control', 'placeholder': "Username",'autofocus': ''}))
     password = forms.CharField(label="密码", max_length=256, widget=forms.PasswordInput(attrs={'class': 'form-control','placeholder': "Password"}))
-    captcha = CaptchaField(label='验证码', error_messages={"invalid":"验证码错误"})
+    captcha = CaptchaField(label='验证码',  error_messages={"invalid":"验证码错误"})
diff --git a/groups/templates/groups/login.html b/groups/templates/groups/login.html
index cdd957b0..f834427a 100644
--- a/groups/templates/groups/login.html
+++ b/groups/templates/groups/login.html
@@ -50,8 +50,10 @@
   </body>
 </html>
 <script>
+$(function(){
+    $('#id_captcha_1').addClass('form-control');
+})
 $('.captcha').click(function () {
-
     $.getJSON("/groups/refresh_captcha/", function (result) {
         $('.captcha').attr('src', result['image_url']);
         $('#id_captcha_0').val(result['key'])