Address more Copilot review feedback

- Replace inline style with a semantic .sponsor-cta class
- Update footer copyright year range to 2026

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: aclark4life

assets/css/pillow.css

@@ -469,6 +469,10 @@ section {
     margin-right: .5rem;
 }
 
+.sponsor-cta {
+    text-align: center;
+}
+
 @media (max-width: 760px) {
     .sponsor-grid {
         grid-template-columns: 1fr;

index.html

@@ -128,7 +128,7 @@ <h2><i class="fas fa-heart" aria-hidden="true"></i> Support Pillow's Future</h2>
                         <div class="sponsor-chip"><i class="fas fa-code-branch" aria-hidden="true"></i> Prioritize reviewing PRs and issues</div>
                         <div class="sponsor-chip"><i class="fas fa-users" aria-hidden="true"></i> Sustain the maintainers who ship Pillow</div>
                     </div>
-                    <div style="text-align: center;">
+                    <div class="sponsor-cta">
                         <a class="btn btn-sponsor-light btn-lg" href="https://github.com/sponsors/python-pillow">
                             <i class="fas fa-heart" aria-hidden="true"></i> Become a GitHub Sponsor</a>
                     </div>
@@ -296,7 +296,7 @@ <h4><i class="fas fa-heart" aria-hidden="true"></i> Support Pillow</h4>
             </div>
             <div class="wrap footer-bottom">
                 <p>
-                    &copy; 1995-2011 Fredrik Lundh and contributors. &copy; 2010-2024 Jeffrey 'Alex' Clark and
+                    &copy; 1995-2011 Fredrik Lundh and contributors. &copy; 2010-2026 Jeffrey 'Alex' Clark and
                     <a href="https://github.com/python-pillow/Pillow/graphs/contributors">contributors</a>.
                     Logo by Alastair Houghton. Psychedelic art by Jeremy Kun.
                 </p>