[jiembe]

I ask somewhere (can't find it) as a side question (I think) why kobo limited the title font size in the the title page to 2em. I tough it was due to the device. But comparing epub file with the resulting kepub file I note the size is reduced during conversion:

original stylesheet

.titre {
display: block;
font-size: 3em;
margin: 0 0 10% 0;
}

resulting kepub

.titre {
display: block;
font-size: 2em;
line-height: 1.2;
margin: 0 0 10%
}

Why is it happening ?

(Adding) I just try 4em and get the same result 2em.