FB2: proper alignment and formatting of epigraph descendants

[sensboston]

Currently, <epigraph> alignment is ignored for descendant. For example, if I want to align all epigraphs in the fb2 document to the right but their descendants (i.e. <p>, <poem>, <stanza>) to the left (of epigraph, not a document! - it's important), I can't do this.

For example, for

    <section>
     <epigraph>
      <poem>
       <stanza>
        <v>Поет зима — аукает,</v>
        <v>Мохнатый лес баюкает</v>
        <v>Стозвоном сосняка.</v>
        <v>Кругом с тоской глубокою</v>
        <v>Плывут в страну далекую</v>
        <v>Седые облака.</v>
       </stanza>
       <text-author>С. Есенин</text-author>
      </poem>
     </epigraph>
     <p>Скучно зимой на пасеке.</p>

I'd like to align section's <epigraph> to the right side of page, but also align <stanza> to the left of <epigraph> block, and <text-author> should be aligned to the right side of epigraph.

It's a low priority feature request.

P.S. Thanks for the great app!