fix address book for small devices

css/src/main.css

@@ -1494,6 +1494,13 @@ a.text-warning:hover {color: #FD7262;}
   }
 }
 
+@media only screen and (max-width: 40em) {
+  dialog.large, .reveal-modal.large {
+    height: auto;
+    padding: 0;
+  }
+}
+
 @media (max-height: 380px) {
   .sidebar-footer {
     display: none;
@@ -1642,10 +1649,6 @@ a.text-warning:hover {color: #FD7262;}
   text-align: center;
 }
 
-.postfix.button.addressbook {
-  right: 60px;
-}
-
 .addressbook-entry td {
   display: block;
   cursor: pointer;