CSS styling constraints for kindle e-ink reader

Question

I am doing some ebook processing. Which involves styling for kindle ebooks. It all looks nice while the newer devices are used, but whenever I open an ebook in older kindle e-ink some styles are not set. Sample:

.bordered-box{
    border-style: solid;
    border-width: 2px;
    border-color: #000000;
}

This style is seen fine on kindle-fire and kindle paperwhite, but it is not applied on regular kindle and kindle dx.

Is there any list of constraints and styles that could be applied to those older versions?

PS. Answering a coomment below, here to make it more visible. The mobis are generated form epubs, that are generated from HTML. So the process is HTML->epub->mobi

Answer 1

The older Kindles (and their mobipocket fileformat renderer) does not support those CSS properties.

Here (PDF link) you can find the standard supported tags/CSS properties. And here is a nice commonly used CSS template.

I would recommend to read through the official publishing guidelines too.