--- a/src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/formats/html/SerializedFormWriterImpl.java	Tue Apr 23 07:05:38 2019 -0400
+++ b/src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/formats/html/SerializedFormWriterImpl.java	Tue Apr 23 18:28:48 2019 +0530
@@ -109,7 +109,7 @@
      * @return the package serialized form header tree
      */
     public Content getPackageSerializedHeader() {
-        return HtmlTree.SECTION();
+        return HtmlTree.SECTION(HtmlStyle.serializedPackageContainer);
     }
 
     /**
@@ -158,7 +158,7 @@
                 ? getLink(new LinkInfoImpl(configuration, LinkInfoImpl.Kind.DEFAULT, typeElement)
                         .label(configuration.getClassName(typeElement)))
                 : new StringContent(utils.getFullyQualifiedName(typeElement));
-        Content li = HtmlTree.LI(HtmlStyle.blockList, links.createAnchor(
+        Content section = HtmlTree.SECTION(HtmlStyle.serializedClassDetails, links.createAnchor(
                 utils.getFullyQualifiedName(typeElement)));
         Content superClassLink = typeElement.getSuperclass() != null
                 ? getLink(new LinkInfoImpl(configuration, LinkInfoImpl.Kind.SERIALIZED_FORM,
@@ -172,8 +172,8 @@
             contents.getContent(
             "doclet.Class_0_extends_implements_serializable", classLink,
             superClassLink);
-        li.add(HtmlTree.HEADING(Headings.SerializedForm.CLASS_HEADING, className));
-        return li;
+        section.add(HtmlTree.HEADING(Headings.SerializedForm.CLASS_HEADING, className));
+        return section;
     }
 
     /**