Dashed lines auto removed if output type is mobi

[flyingfoxlee]

I was trying to add some dash line between sections using ebook-convert while fetching news.

I put the following css spcs in extra_css variable,

.dash-line {
    border-bottom: 1px dashed rgb(0, 0, 0);
        border-bottom-width: 1px;
        border-bottom-style: dashed;
        border-bottom-color: rgb(0, 0, 0);
}

Then use

<div class="dash-line"></div>

to get a dashed line.
But it failed to appear when the output type is set to mobi, and it appears when the output
type is set to epub.

Kind of strange, how to fix it?

[kovidgoyal]

convert to azw3 not mobi. mobi has no support fort for what youare trying to do.

[flyingfoxlee]

Originally Posted by kovidgoyal

convert to azw3 not mobi. mobi has no support fort for what youare trying to do.

Thank you, Kovid, what if

 --mobi-file-type='both'

.
I was thinking that it's ebook-convert cleared the dashed line while processing, so this is not the case?

[flyingfoxlee]

Originally Posted by kovidgoyal

convert to azw3 not mobi. mobi has no support fort for what youare trying to do.

what's interesting is that a azw3 file is much larger than the 'same' mobi file, both are larger
than the epub file, any suggestion that could shrink it?