This is a demo of multi-page view transitions using a simple Flask app.
The <meta name="view-transition" content="same-origin" />
tag indicates that the browser should attempt to transition between pages of the same origin. So, if you click on a link to a page on the same origin, the browser will attempt to transition to that page instead of doing a full page refresh.
python app.py
Then access via localhost:5000.
You may need the chrome flags, depending on your version:
chrome://flags#view-transition
chrome://flags#view-transition-on-navigation