Accessibility fixes

- Add tab index order to navigation.
- Minor CSS changes.

Change-Id: I402d3cb8c1ac14bd930a5efcf472c1d249cfe00a
Signed-off-by: Michael Davis <michael.s.davis@ibm.com>
diff --git a/app/common/styles/base/utility.scss b/app/common/styles/base/utility.scss
index d381101..33cf61a 100644
--- a/app/common/styles/base/utility.scss
+++ b/app/common/styles/base/utility.scss
@@ -34,7 +34,7 @@
   justify-content: center;
   flex-direction: column;
   background: transparent;
-  border: 0;
+  border: 0px;
   margin: 0;
   &:hover {
     color: $lightbg__accent;