improve styling of attribute on verseblock
improve styling of attribute on verseblock

asciidocfx/asciidoctor,anthonny/asciidoctor,yukisan/asciidoctor,gjtorikian/asciidoctor,yukisan/asciidoctor,glamouracademy/asciidoctor,mjang/mj-asciidoc,pepijnve/asciidoctor,cuit-zhaxin/asciidoctor,gjtorikian/asciidoctor,anthonny/asciidoctor,glamouracademy/asciidoctor,asciidocfx/asciidoctor,cuit-zhaxin/asciidoctor,benignbala/asciidoctor,neontapir/asciidoctor,neontapir/asciidoctor,pepijnve/asciidoctor,benignbala/asciidoctor,mjang/mj-asciidoc