Modifying content width of the Sphinx theme 'Read the Docs'

Question

I am using \'Read the Docs\' Sphinx theme for my documentation. In the original theme, given below

http://read-the-docs.readthedocs.org/en/latest/theme.html

Answer 1

The solutions here are somewhat hackish. If you want to include the style, and have a css override and have it work on RTD you will want something like this.

on_rtd = os.environ.get('READTHEDOCS', None) == 'True'

if not on_rtd:  # only import and set the theme if we're building docs locally
  import sphinx_rtd_theme
  html_theme = 'sphinx_rtd_theme'
  html_theme_path = [sphinx_rtd_theme.get_html_theme_path()]
  html_style = 'css/custom.css'
else:
  html_context = { 
    'css_files': [
        'https://media.readthedocs.org/css/sphinx_rtd_theme.css',
        'https://media.readthedocs.org/css/readthedocs-doc-embed.css',
        '_static/css/custom.css',
    ],  
  }   

I have tested this myself and it appears to work locally and on RTD. Largely plagiarized from https://blog.deimos.fr/2014/10/02/sphinxdoc-and-readthedocs-theme-tricks-2/