The index page now uses the same original chemistry layout. Each subject has its own page, and the chapter HTML files stay organized inside subject folders.
Main Subject Page
Open chemistry handbooks and chapter links
Main Subject Page
Open CS chapters with the same layout
Main Subject Page
Open maths chapters with the same layout
Main Subject Page
Open physics chapters with the same layout
Main Subject Page
Open english chapters with the same layout
The old chemistry black-and-white layout is now shared across the whole site.
Chapter files stay inside folders named after each subject.
The index page links to each subject, and each subject links to its chapters.
Every subject now looks like part of the same handbook collection.