minor QA fixes to margins

Change-Id: If3730f75e796f8f48fd036234711efa23e23f794
Signed-off-by: Michael Davis <michael.s.davis@ibm.com>
diff --git a/app/configuration/styles/network.scss b/app/configuration/styles/network.scss
index d0514fc..b4bd72d 100644
--- a/app/configuration/styles/network.scss
+++ b/app/configuration/styles/network.scss
@@ -7,7 +7,7 @@
   }
   .dropdown__button {
     width: 200px;
-    margin-top: 0px;
+    margin-top: 0;
     text-align: left;
   }
   input {