On page https://pydata-sphinx-theme.readthedocs.io/en/stable/user_guide/web-components.html , "custom CSS file" that points to https://pydata-sphinx-theme.readthedocs.io/en/stable/user_guide/custom-css gives a 404

"CSS custom properties" that points to https://pydata-sphinx-theme.readthedocs.io/en/stable/user_guide/css-variables is also broken.

p.s. Maybe running Sphinx linkcheck could catch some of these ❓

(Noticed this when investigating astropy/astropy#15112 )