diff --git a/src/components/app/app.scss b/src/components/app/app.scss
index 4e60d3d..f64eb42 100644
--- a/src/components/app/app.scss
+++ b/src/components/app/app.scss
@@ -150,3 +150,11 @@ div.el-card.course-card > div.el-card__body
 {
     font-family: "Comic Sans MS", Nunito Sans, Helvetica Neue, Microsoft YaHei, "微软雅黑", Arial, sans-serif;
 }
+
+#demo-not-available
+{
+    padding-top: 40vh;
+    font-size: 2em;
+    color: #bbbbbb;
+    margin: 0 50px;
+}