diff --git a/admin/css/style.css b/admin/css/style.css
index 86cb2c10..f7546146 100644
--- a/admin/css/style.css
+++ b/admin/css/style.css
@@ -1147,6 +1147,15 @@ a.operate-reply {
     width: 100px;
     border: 1px solid #E9E9E6;
     border-width: 2px 0 0 0; }
+  #wmd-preview .summary:after {
+    display: block;
+    margin: 2em 0;
+    border: 1px dashed #D9D9D6;
+    border-width: 1px 0;
+    color: #999;
+    font-size: .85714em;
+    text-align: center;
+    content: "- more -"; }
 
 /* 编辑器全屏 */
 .fullscreen #wmd-button-bar, .fullscreen #text, .fullscreen #wmd-preview, .fullscreen .submit {
diff --git a/admin/scss/components/_editor.scss b/admin/scss/components/_editor.scss
index 425c4113..26d57828 100644
--- a/admin/scss/components/_editor.scss
+++ b/admin/scss/components/_editor.scss
@@ -90,6 +90,18 @@
     border: 1px solid #E9E9E6;
     border-width: 2px 0 0 0;
   }
+  .summary {
+    &:after {
+      display: block;
+      margin: 2em 0;
+      border: 1px dashed #D9D9D6;
+      border-width: 1px 0;
+      color: #999;
+      font-size: .85714em;
+      text-align: center;
+      content: "- more -";
+    }
+  }
 }
 
 /* 编辑器全屏 */