Returns whether the specified element selector is present on the page.
    @Params
    driver - the webdriver object (required)
    selector - the locator that is used (required)
    by - the method to search for the locator (Default: By.CSS_SELECTOR)
    @Returns
    Boolean (is element present)

def is_element_present(driver, selector, by=By.CSS_SELECTOR):
    """
    Returns whether the specified element selector is present on the page.
    @Params
    driver - the webdriver object (required)
    selector - the locator that is used (required)
    by - the method to search for the locator (Default: By.CSS_SELECTOR)
    @Returns
    Boolean (is element present)
    """
    try:
        driver.find_element(by=by, value=selector)
        return True
    except Exception:
        return False