Jupyter reload custom.css?
I'm using Jupyter 5.0. 
Right now I've tried to edit custom.css and the changes are reflected immediately after reloading a page without restarting. 
I'm not sure about 4.3 version, but I guess it should work the same way. What did the property you change?
I'm using Jupyer 4.3.0. I find that when I update my ~/.jupyter/custom/custom.css, the changes are not reflected in my notebook until I kill jupyter-notebook and start it again. This is annoying, so how can I make Jupyter Notebook recognize the custom.css file changes without completely restarting the notebook?