WIP accessibility fixes (#99)

Signed-off-by: Grace Grimwood <[email protected]>

Author: gracegrimwood

_includes/footer.html

@@ -29,14 +29,14 @@
                         </div>
                         <div class="w-100 my-2">
                             <a class="icon-link me-1" href="https://github.com/kroxylicious/kroxylicious">
-                                <img class="img-fluid krx-icon" src="{{ '/assets/theme/images/github-mark.svg' | absolute_url }}"/>
+                                <img class="img-fluid krx-icon" src="{{ '/assets/theme/images/github-mark.svg' | absolute_url }}" alt="GitHub logo"/>
                             </a>
                         </div>
                     </li>
                 </ul>
             </div>
             <div class="col-6 col-lg-2 offset-lg-2 mb-3 text-lg-end">
-                <h5>Links</h5>
+                <h3 class="fs-5">Links</h3>
                 <ul class="list-unstyled">
                     <li class="mb-2">
                         <a class="text-body link-underline-dark link-underline-opacity-0 link-underline-opacity-10-hover" href="{{ '/' | absolute_url }}">
@@ -61,7 +61,7 @@ <h5>Links</h5>
                 </ul>
             </div>
             <div class="col-6 col-lg-2 mb-3 text-lg-end">
-                <h5>Projects</h5>
+                <h3 class="fs-5">Projects</h3>
                 <ul class="list-unstyled">
                     <li class="mb-2">
                         <a class="text-body link-underline-dark link-underline-opacity-0 link-underline-opacity-10-hover" href="https://github.com/kroxylicious/kroxylicious">
@@ -76,7 +76,7 @@ <h5>Projects</h5>
                 </ul>
             </div>
             <div class="col-6 col-lg-2 mb-3 text-lg-end">
-                <h5>Community</h5>
+                <h3 class="fs-5">Community</h3>
                 <ul class="list-unstyled">
                     <li class="mb-2">
                         <a class="text-body link-underline-dark link-underline-opacity-0 link-underline-opacity-10-hover" href="https://kroxylicious.slack.com" target="_blank" rel="noopener">

_includes/redhat-footer.html

@@ -3,7 +3,7 @@
     <div class="license">
       &copy; Kroxylicious authors {{ 'now' | date: "%Y" }} | Kroxylicious licensed <a href="https://github.com/kroxylicious/kroxylicious/blob/main/LICENSE" target="_blank" rel="license noopener">Apache-2.0</a> | Documentation <a href="https://creativecommons.org/licenses/by/4.0/" target="_blank" rel="license noopener">CC-BY-4.0</a> | Apache and Apache Kafka are trademarks of the <a href="https://www.apache.org/" target="_blank" rel="license noopener">Apache Software Foundation</a>.
     </div>
-    <div class="redhat-logo"><a href="https://www.redhat.com/" target="_blank"><img src="{{site.baseurl}}/assets/theme/images/Logo-Red_Hat-Sponsored_By-A-Reverse-RGB.svg"></a>
+    <div class="redhat-logo"><a href="https://www.redhat.com/" target="_blank"><img src="{{site.baseurl}}/assets/theme/images/Logo-Red_Hat-Sponsored_By-A-Reverse-RGB.svg" alt="Sponsored By Red Hat logo"></a>
       </div>
     </div>
   </div>

index.markdown

@@ -5,7 +5,7 @@
 layout: index
 ---
 
-#### Why Kroxylicious?
+## Why Kroxylicious?
 
 Proxies are a powerful architectural pattern which are widely used for other
 application-layer protocols, such as HTTP.