diff --git a/plugin.rb b/plugin.rb
index 6acc7dc..5b0a9ae 100755
--- a/plugin.rb
+++ b/plugin.rb
@@ -53,6 +53,20 @@ register_css <<CSS
   margin: 0 auto;
 }
 
+.google-adsense.adsense-post-bottom {
+  max-width: 735px;
+  background-color: blue;
+  padding: 0 11px;
+}
+
+@media all
+and (max-width : 775px) {
+  .google-adsense.adsense-post-bottom {
+    box-sizing: border-box;
+    width: 100%;
+  }
+}
+
 .amazon-product-links {
   padding: 3px;
   margin-bottom: 10px;