Keep headline at same position

I made a small change to make sure the headline is in same position
regardless it is editable or readonly.

src/Umbraco.Web.UI.Client/src/less/panel.less

@@ -48,6 +48,7 @@
   background: none;
   margin: 15px 0 0 20px;
   padding: 3px 5px;
+  line-height: 1.4;
   height: auto;
   width: 100%;
   border: 1px solid @grayLighter;