diff --git a/src/main/less/specs.less b/src/main/less/specs.less
index c4fe8bcd..6e4880f2 100644
--- a/src/main/less/specs.less
+++ b/src/main/less/specs.less
@@ -744,6 +744,9 @@
                                         outline: 2px solid black;
                                         outline-color: #cc0000;
                                     }
+                                    select[name='parameterContentType'] {
+                                        max-width:300px;
+                                    }
                                 }
                                 div.response {
                                     div.block {
@@ -1104,4 +1107,4 @@
     }
 }
 
-}
\ No newline at end of file
+}