diff --git a/static/css/markdown.preview.css b/static/css/markdown.preview.css
index 2c96303f..9a691426 100644
--- a/static/css/markdown.preview.css
+++ b/static/css/markdown.preview.css
@@ -159,6 +159,9 @@
     .article-body .markdown-toc{
         display: none;
     }
+    .article-body .markdown-article{
+        width: 100%;
+    }
     .article-body .markdown-article{
         margin-right: 0;
     }