= Sidebar Styles:navtitle: SidebarsThis page describes the in-page sidebar block styles, not the styles for the navigation sidebar.== Sidebar blocksxref:antora:asciidoc:sidebar.adoc[Sidebars] can contain any type of content.The sidebar title is specified by the block class title.Here's an AsciiDoc source example that produces a sidebar with a title:[source,asciidoc]----.Optional Title****This is a paragraph in a sidebar.****----[source,html]----<div class="sidebarblock"><div class="content"><div class="title">Optional Title</div><div class="paragraph"><p>This is a paragraph in a sidebar.</p></div></div></div>----