Fix ad display

Author: nzakas

styles/ads.css

@@ -1,9 +1,21 @@
 #carbonads {
     float: right;
-    max-width: 130px;
+    margin: 20px 0 20px 20px;
+    border: 2px solid #f4f4f4;
+    padding: 15px;
 }
 
 .carbon-text {
     display: block;
     width: 130px;
+    font-size: 75%;
+}
+
+.carbon-poweredby {
+    float: right;
+    font-size: 60%;
+}
+
+pre {
+    clear: both;
 }