Increase the bring_to_front() z-index setting

Author: mdmintz

seleniumbase/fixtures/base_case.py

@@ -1859,7 +1859,7 @@ def bring_to_front(self, selector, by=By.CSS_SELECTOR):
             return
         selector = re.escape(selector)
         selector = self.__escape_quotes_if_needed(selector)
-        script = ("""document.querySelector('%s').style.zIndex = '9999';"""
+        script = ("""document.querySelector('%s').style.zIndex = '999999';"""
                   % selector)
         self.execute_script(script)