Update description.html

wiki/pages/description.html

@@ -3,9 +3,9 @@
     .sidebar {
       position: fixed;
       left: 0;
-      top: 100px;
+      top: 0px;
       width: 200px;
-      height: 100%;
+      height: 50%;
       background-color: #f8f9fa;
       padding: 20px;
       box-shadow: 2px 0 5px rgba(0,0,0,0.1);