[tshering]

Originally Posted by henriquemaia

Out of curiosity:
How can one force other properties using that css file?

I like especially

html {-epub-writing-mode: vertical-rl}

and

html {
    color:white;
    background-color:black;
}

In combination with kobolauncher or files monitor you can in this way toggle between sort of day/night mode and portrait/landscape.