When web pages are displayed incompletely or distorted, it could be due to the Internet connection, a problem with the server where the page is stored or our own browser.
One option is to try a quick refresh of the content by clicking F5.
On Apple computers the key combination to reload the page is usually "Ctrl + R" or "Ctrl + F5".
If it doesn't work, you can try to load the page in another browser, or on another device, if possible. In case the system is not at fault, then be patient and wait for a while.