[threatofrain]

In CSS you can directly target even or odd or some other arithmetic sequence.

    :nth-of-type(2n+1)

[lelanthran]

I'm not an expert in CSS, but I don't know how I can use that to refer to pages.

I mean, I'm not creating pages with `<page>...</page>`.

[cubefox]

See

https://developer.mozilla.org/en-US/docs/Web/CSS/@page

https://developer.mozilla.org/en-US/docs/Web/CSS/page