Merge pull request #142 from PolymerElements/301

Fixes for webcomponents.org

Author: aomarks

iron-component-page.html

@@ -70,6 +70,11 @@
         }
       }
 
+      iron-doc-viewer:not([demo]) {
+        padding: 5px 20px 20px 20px;
+        max-width: 56em;
+      }
+
       #error-toast {
         background-color: var(--paper-red-600);
       }
@@ -123,7 +128,8 @@
             base-href="[[baseHref]]"
             demo-src-prefix="[[demoSrcPrefix]]"
             title="{{_title}}"
-            path="{{_path}}">
+            path="{{_path}}"
+            on-view-changed="_onViewChanged">
         </iron-doc-viewer>
 
       </app-header-layout>
@@ -186,6 +192,10 @@
           }
         },
 
+        _onViewChanged() {
+          this.$.viewer.scrollIntoView();
+        },
+
         _onNavSelect() {
           // Note we need to listen for this event, and can't rely just on the
           // path changing, because the user might click on the nav item they