We now want to move the design from a static html file to using Flask Jinja template rendering. For this, you must:

• Migrate / split the HTML code to templates/_base.html and templates/index.html
  • Note: use Jinja2 template inheritance with an empty content block;
• Modify server.py to call render_template to actually serve our design.
• Also create about.html and a Python method for serving it (fill it with whatever content you want ;) ).