Update file description.html

wiki/pages/description.html

@@ -9,6 +9,7 @@
       background-color: #ffffff	;
       padding: 20px;
       box-shadow: 2px 0 5px rgba(0,0,0,0.1);
+      border-radius: 8px;
     }
     .sidebar ul {
       list-style: none;