Zend certified PHP/Magento developer

Renaming downloaded webpages from Chrome without affecting styling, images, etc

When I download a webpage with Chrome I am given an HTML file and a folder of files associated with the webpage, which includes styling, images, etc. When I rename the HTML file, the webpage no longer works with styling and images gone. This happens even if I rename the corresponding folder with the exact same name. How can I avoid this issue?