power-operations: misc changes

    * Accessibility tweaks.
    * Minor style updates.
    * Navigation updates.

Change-Id: I7ceea9697ccd5853268f9bd8704e73b367e1bc0b
Signed-off-by: Michael Davis <michael.s.davis@ibm.com>
diff --git a/src/logo.html b/src/logo.html
index a938e89..ec78a36 100644
--- a/src/logo.html
+++ b/src/logo.html
@@ -1 +1 @@
-<img src="img/logo.svg" id="header__logo" />
\ No newline at end of file
+<img src="img/logo.svg" id="header__logo" alt="company logo"/>
\ No newline at end of file