pip install sphinx doc2dash
git clone https://github.com/facebook/tornado.git
cd tornado/docs
vim conf.py
# add `nosidebar=True,` under `html_theme_options`
make sphinx
vim build/html/_static/tornado.css
# find `div.body`
# change left: 0;
# add width: 100%;
doc2dash --name tornado -A build/html
aproveite ^^