在selenium python中如何限制截图高度？

from selenium import webdriver
from selenium.webdriver.chrome.options import Options

chrome_options = Options()
chrome_options.add_argument("--headless")  # 无界面模式
chrome_options.add_argument("--window-size=1920,1080")  # 设置窗口大小为1920x1080
driver = webdriver.Chrome(options=chrome_options)

driver.get("https://www.example.com")
driver.save_screenshot("screenshot.png")