Reduce the selector score to be able to override [data-split-to] styles without using !important.

Removed the

.pagedjs_pages > .pagedjs_page > .pagedjs_sheet > .pagedjs_pagebox > .pagedjs_area > div [data-split-to] {

to keep only

 div [data-split-to] {

This was breaking the use of ::first-letter element in the beginning of a page.