Initial accessibility tweaks based on ARC Tookit

Ran the ARC Tookit Firefox extension which pointed out
accessiblity issues with color contrasts, link display, and
skip to main link.  Some of the link colors don't look great
when they reach the recommended contrast level.

public_html/css/hpr.css

@@ -26,10 +26,10 @@ https://creativecommons.org/publicdomain/
 	--banner-text-primary: #000000;
 	--background-secondary: #4d4d4d;
 	--text-secondary: #dfdfdf;
-	--link-primary: #247ba0;
+	--link-primary: #004852 /*#154a60*/;
 	--link-primary-hover: #f8961e;
-	--link-secondary: #7fc5e2;
-	--link-secondary-hover: #f9c74f;
+	--link-secondary: #a8f8ff;
+	--link-secondary-hover: #f9e9c2;
 	--font-family-hpr: Verdana, Arial, Helvetica, sans-serif; /* 1em/1.5 OpenDyslexic, */;
 
   /* screen breakpoints */
@@ -117,7 +117,9 @@ body > footer hr:first-child {
 body > footer a {
 	color: var(--link-secondary);
 }
-
+body > footer a:hover {
+	color: var(--link-secondary-hover);
+}
 div,
 h1,
 h2,