Jupiter notebook changing font style and font size

installed Jupyter Notebook after , The default font is non equal width font , It's very uncomfortable to use , Let's find... First

anaconda3\envs\ Name of the environment \Lib\site-packages\notebook\static\components\codemirror\lib

Under the codemirror.css File and open .

Section of this document 5 Xing He 247 Lines control the font style and font size respectively , Because my favorite is 13px Of Fira Code typeface , Therefore, the following modifications are made ：


After the modification is completed , Save this file , restart Jupyter Notebook that will do .