问题记录 网页中可以选择元素，但代码却选择不到

代码

from selenium import webdriver
wd = webdriver.Chrome(r'D:\develop_study\chromedriver\chromedriver')
wd.implicitly_wait(5)
wd.get('http://fr.soundhw.com:9999/')

elements = wd.find_elements_by_css_selector('.bi-absolute-layout > .bi-single')

for element in elements:
print(element.text)

代码运行结果

D:\develop_study\python\Python38-32\python.exe D:/code_file/first_web/运维/帆软自动登录.py

Process finished with exit code 0