diff --git a/article/views.py b/article/views.py
index 07b800e..2726d28 100644
--- a/article/views.py
+++ b/article/views.py
@@ -4,6 +4,8 @@
 from django.contrib import messages
 from .models import *
 from userpage.models import *
+from django.contrib.auth.decorators import login_required
+from django.db import transaction
 
 
 # Create your views here.
@@ -83,8 +85,15 @@ def publish(request):
     return render(request,'article/publish.html',{'article_form':article_form,'operation':'发布'})
 
 
+@login_required
+@transaction.atomic
 def update(request, article_id):
     art = Article.objects.get(pk=article_id)
+    if request.user.username == art.author_id.user.username:
+        pass
+    else:
+        return redirect('/article/%d/' % (article_id,))
+
     if request.method == 'POST':
         article_form = ArticleForm(request.POST,request.FILES,instance=art)
 
diff --git a/db.sqlite3 b/db.sqlite3
index 2b886c7..a77d3cc 100644
Binary files a/db.sqlite3 and b/db.sqlite3 differ
diff --git a/edconline/settings.py b/edconline/settings.py
index 10dc7ca..cca0f16 100644
--- a/edconline/settings.py
+++ b/edconline/settings.py
@@ -27,7 +27,7 @@
 DEBUG = True
 
 ALLOWED_HOSTS = ['*']
-
+LOGIN_URL = '/userpage/login/'
 
 # Application definition
 
diff --git a/static/bootstrap/css/style.css b/static/bootstrap/css/style.css
index 6a3b7ea..f286862 100755
--- a/static/bootstrap/css/style.css
+++ b/static/bootstrap/css/style.css
@@ -1,4 +1,7 @@
-
+@media (min-width:500px){
+.container{width:480px}
+.banner{height:300px}
+}
 
 html,body {
     background-color:#f6f8fa;
@@ -72,7 +75,6 @@ ul.nav.navbar-nav  li a:hover {
 
 div.container-fluid {
 	margin:0;
-
 	position:relative;
     min-height:100%;
     /*设置padding-bottom值大于等于footer的height值，以保证main的内容能够全部显示出来而不被footer遮盖；*/
@@ -81,7 +83,7 @@ div.container-fluid {
 }
 
 .container {
-	width:80%;
+	min-width:80%;
 }
 
 .sidebar , .content {
@@ -91,7 +93,7 @@ div.container-fluid {
 .card {
 	width:100%;
 	padding:10px;
-	margin:10px;
+	margin-top:10px;
 	border: 1px solid #e2e2e2;
 	box-shadow: 1px 1px 1px 1px #e2e2e2;
 	background-color:white;
@@ -268,4 +270,4 @@ footer, footer a{
 .foot-wrap .foot-top ul li {
 	float:left;
 	padding-right:20px;
-}
+}