fix(fronted) Fix skip navigation to footer (#250)

* fix(fronted) Fix skip navigation to footer

* fix(frontend) Match footer background to primary slate-700

Author: ken-blanchard

frontend/app/components/footer.tsx

@@ -6,7 +6,7 @@ export function Footer() {
   const { t } = useTranslation(['common']);
 
   return (
-    <footer id="footer" className="bg-[#26374A]">
+    <footer id="wb-info" tabIndex={-1} className="bg-slate-700">
       <section>
         <h2 className="sr-only" id="accessibleSectionHeader1">
           {t('common:footer.header-accessible')}

frontend/tests/components/__snapshots__/footer.test.tsx.snap

@@ -3,8 +3,9 @@
 exports[`Footer > should render footer > expected html 1`] = `
 <div>
   <footer
-    class="bg-[#26374A]"
-    id="footer"
+    class="bg-slate-700"
+    id="wb-info"
+    tabindex="-1"
   >
     <section>
       <h2