Hello, {{ name }}!
You provided me a name through the URL of this webpage.
Flask parsed it and passed it as a parameter to the render_template function in flask_demo.py, which is located in the directory where you installed Flask
It also imports the css as a file in the static/ directory. This is the standard used for images etc.
There's plenty to learn about Flask! Hopefully this gives you some of the information you need to dive deeper
{% else %}Hello!
This is a page served up by Flask. Try adding a / followed by your first name in the URL, or click here for a demonstration of URL parsing.
{% endif %}