Optimize web performance and caching

assets/css/components/_footer.css

@@ -5,10 +5,10 @@
     padding: var(--spacing-l) var(--spacing-l);
     text-align: center;
     font-size: 0.9rem;
-    color: #777;
+    color: #5e5e5e;
     background-color: #f1f1f1;
 }
 
 body:not(.homepage) .main-footer-bar {
     margin-top: var(--spacing-xl);
-}
+}