several user QoL styling improvements, incl. footer icon .active color painting

src/functional_tests/test_gameboard.py

@@ -56,6 +56,7 @@ class GameboardNavigationTest(FunctionalTest):
         self.browser.find_element(By.CSS_SELECTOR, ".gear-btn")
         # 3. Assert Coin-on-a-String present in kit
         coin = self.browser.find_element(By.ID, "id_kit_coin_on_a_string")
+        self.browser.execute_script("arguments[0].scrollIntoView({block: 'center'});", coin)
         # 6. Hover over it; assert tooltip shows name, entry text & reuse description
         ActionChains(self.browser).move_to_element(coin).perform()
         self.wait_for(