from selenium import webdriver
from time import sleep
#加载浏览器驱动
driver=webdriver.Firefox()#加载火狐浏览器驱动
driver.get("https://www.51zxw.net/list.aspx?cid=28")
driver.maximize_window()
sleep(2)
driver.set_window_size(400,800)
sleep(2)
driver.refresh() #刷新页面
(浏览器是火狐47.0.2,seleniumIDE2.9.1,webdirver驱动是geckodriver-v0.15.0-win64)?