Update nav and styling

_data/navigation.yaml

@@ -1,18 +1,5 @@
 
 top_nav:
-  - title: Docs
-    url: https://github.com/Microsoft/web-build-tools/wiki/Rush
-  - title: API
-    url: https://microsoft.github.io/web-build-tools/api/rush-lib.html
-  - title: News
-    url: https://github.com/Microsoft/web-build-tools/wiki
-  - title: Gitter
-    url: https://gitter.im/web-build-tools/web-build-tools
-  - title: Get Started
-    url: https://github.com/Microsoft/web-build-tools/wiki/Rush#3-minute-demo
-    primary: true
-
-new_top_nav:
   - title: Docs
     url: /pages/docs/start
 

_sass/_docsite.scss

@@ -98,7 +98,3 @@ body {
   flex-wrap: nowrap;
   margin: 0;
 }
-
-h1 {
-  padding-top: 5rem;
-}

_sass/_global.scss

@@ -10,4 +10,9 @@ h5,
 h6 {
   @include body-font;
   font-weight: 700;
+  padding-top: 3rem;
+}
+
+h1 {
+  padding-top: 4rem;
 }