diff --git a/src/main/less/specs.less b/src/main/less/specs.less
index c4fe8bcd..83ca9a0b 100644
--- a/src/main/less/specs.less
+++ b/src/main/less/specs.less
@@ -365,6 +365,10 @@
         border: 1px solid #aaa;
     }
 
+    .parameter-content-type select {
+        max-width:300px;
+    }
+
     h1 {
         color: black;
         font-size: 1.5em;
@@ -1104,4 +1108,4 @@
     }
 }
 
-}
\ No newline at end of file
+}