Tune ad CSS

Author: nomcopter

demo/example.less

@@ -73,11 +73,6 @@ body {
   flex-direction: column;
 
   .ad-container {
-    display: flex;
-    justify-content: center;
-    align-items: center;
-
-    flex: 1;
-    height: 0;
+    margin-top: 20px;
   }
 }