<html><head><style> html { background: url(/i/photo/tiyugongyuan.jpg) no-repeat center fixed; background-size: cover;}body { color: white; }</style></head><body><h1>完整页面的背景图像</h1><p>Shanghai is one of the four direct-administered municipalities of the People's Republic of China. Welcome to Shanghai! The city is located on the southern estuary of the Yangtze, with the Huangpu River flowing through it.</p></body></html>