When I select text of input cells in Jupyter Notebook on Ubuntu in Chromium, I can barely see the highlight. Like this (everything after "100" is highlighted):
On output cells I can easily see the highlighted text (blue background):
How can I fix this? It's hard to do copy-paste edits on input cells when I can barely see what I've selected.
Follow these steps:
Find your configuration folder (I will assume it is ~/.jupyter) with
import jupyter_core jupyter_core.paths.jupyter_config_dir() You can easily find what would be the corresponding directory for Windows, if needed.
Create a folder ~/.jupyter/custom, if it does not exist. Other folders might also work (How do I set custom CSS for my IPython/IHaskell/Jupyter Notebook?).
Create an empty file ~/.jupyter/custom/custom.css, if it does not exist.
Add
.cm-s-ipython div.CodeMirror-selected { background: #859900 !important; } to your custom.css. Use a suitable color.
Reload your notebook in the browser, for immediate results.
I solved by loading jupyter notebook from Terminal (not anaconda), once loaded, I looked for the .css in the execution files that load in the terminal window, and found the styling file.
The file name is style.min.css
/home/<user>/anaconda3/lib/python3.6/site-packages/notebook/static/style/style.min.css ctrl + f to browse inside the file and your set!
FYI my version of jn:
$ jupyter notebook --version 6.0.0 
