docstr: wait_for_element is shortcut to `wait_for_element_by_css_selector`
  timeout if not set, equals to the fixture's `wait_timeout`.
code: def wait_for_element(self, selector, timeout=None):
      """wait_for_element is shortcut to `wait_for_element_by_css_selector`
      timeout if not set, equals to the fixture's `wait_timeout`."""
      return self.wait_for_element_by_css_selector(selector, timeout)
  
imports: import os
  import sys
  import time
  import logging
  import warnings
  import percy
  import requests
  from selenium import webdriver
  from selenium.webdriver.support import expected_conditions
  from selenium.webdriver.common.by import By
  from selenium.webdriver.support.wait import WebDriverWait
  from selenium.webdriver.common.keys import Keys
  from selenium.webdriver.common.action_chains import ActionChains
  from selenium.common.exceptions import WebDriverException, TimeoutException, MoveTargetOutOfBoundsException
  from dash.testing.wait import text_to_equal, style_to_equal, class_to_equal, contains_text, contains_class, until
  from dash.testing.dash_page import DashPageMixin
  from dash.testing.errors import DashAppLoadingError, BrowserError, TestingTimeoutError
  from dash.testing.consts import SELENIUM_GRID_DEFAULT
label_desc: Use image node_id 11 for calling the Browser obj's underlying member method code with example usage: obj.wait_for_element(selector, timeout) and returns: self