Defining the General Layout
Now the basic layout of the rendered documents is created.
Elements that are stacked one on top of the other are: book,
            article, section, title,
            figure, table, image. These
            elements are marked as having block style for display. Elements that
            are placed one after the other in a flowing sequence are: b,
            i. These will have inline display.
         
/* Vertical flow */
book,
section,
para,
title,
image,
ref {
    display:block;
}
/* Horizontal flow */
b,i {
    display:inline;
}
            
         Important
Having 
         block display children in an
               inline display parent results in Oxygen XML Editor plugin changing the style
               of the parent to block display.
            