Typographically improved Jupyter notebooks

This custom CSS file contains several typographic adjustments (inspired by Butterick's Practical Typography) to improve the legibility of Jupyter notebooks.

Installation

For best results, install the following fonts on your system:

Copy custom.css to the custom subdirectory of a Jupyter profile, e.g. ~/.jupyter/custom.
Refresh any open notebook or open an new notebook to see the changes.

Jupyter defaults (from IPython 3.0)

With this stylesheet