unit) <span>&#45;&gt;</span> ?&#8288;style:<a href="../../Css_Property#type-block">Css_Property.block</a> <a href="../../Css_Style#type-t">Css_Style.t</a> <span>&#45;&gt;</span> ?&#8288;css_module:<a href="../../Css_Property#type-block">Css_Property.block</a> <a href="../../Css_Module#type-t">Css_Module.t</a> <span>&#45;&gt;</span> <span class="type-var">'b</span> <a href="#type-child">child</a> array <span>&#45;&gt;</span> [&gt; <a href="../../Html_Node#type-output">Html_Node.output</a> ] <a href="../../Ht