Improve Chromium CSS performance

output/index.css

@@ -90,8 +90,12 @@ a, .anchorstyle {
 	cursor: pointer;
 }
 
-*, *::after, *::before {
-	transition: color 3s, background-color 2s;
+/* Enumerate elements with transitions to improve performance on Chromium. */
+#theming-root, th, tr, .protocol-indicator, .copy_button,
+.td_description::after,
+#details-modal, #details-modal :is(#details-modal-copy-button, #details-modal-copy-staff-id),
+a, .anchorstyle {
+	transition: color 2.5s linear, background-color 2s linear;
 }
 
 html.js .noscript, .hidden {