[Update] Config Page: Adjust Go back button to be a bit smaller and expand clickable range.

src-ui/utils/variables.css

@@ -47,5 +47,5 @@
 
     --main_page_topbar_height: 4.8rem;
     --config_page_sidebar_width: 22rem;
-    --config_page_topbar_height: 5.2rem;
+    --config_page_topbar_height: 8rem;
 }