Install custom.css to Jupyter Notebook

custom.css

/* Hide relevant elements */
#header, #menubar-container, div.input, div.run_this_cell, div.prompt {
    display: none;
}
/* Output to expand to 100% if div.run_this_cell is hidden */
div.output_subarea {
    max-width: 100%;
}

installCustomCSS.ipynb

import os
import shutil
import jupyter_core

    
filename = 'custom.css'
file = os.path.join(os.path.abspath('.'), filename)

if os.path.isfile(file) :
    targetFile = os.path.join(jupyter_core.paths.jupyter_config_dir() + "/custom", filename)
#     print("remove(\"{}\")".format(targetFile))
#     print("move(\"{}\", \"{}\")".format(file, targetFile))
    if os.path.isfile(targetFile):
        rc = os.remove(targetFile)
    if not os.path.isdir(os.path.dirname(targetFile)):
        # Creating directory if not already exists
        os.makedirs(os.path.dirname(targetFile), mode=0o777, exist_ok=True)
    rc = shutil.copy2(file, targetFile)
    if rc:
        print("Successfully copied {} -> {}".format(file, targetFile))

print(os.path.isfile('/home/jovyan/.jupyter/custom/custom.css'))