diff --git a/package-lock.json b/package-lock.json
index 63537015..4ce4d81f 100644
--- a/package-lock.json
+++ b/package-lock.json
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+        "ignore": "^5.0.0",
+        "json-merge-patch": "^1.0.0",
+        "kleur": "^4.1.0",
+        "minimist": "^1.2.0",
+        "prompts": "^2.0.0",
+        "semver": "^7.0.0"
+      },
+      "dependencies": {
+        "ajv": {
+          "version": "8.11.0",
+          "resolved": "https://registry.npmjs.org/ajv/-/ajv-8.11.0.tgz",
+          "integrity": "sha512-wGgprdCvMalC0BztXvitD2hC04YffAvtsUn93JbGXYLAtCUO4xd17mCCZQxUOItiBwZvJScWo8NIvQMQ71rdpg==",
+          "dev": true,
+          "requires": {
+            "fast-deep-equal": "^3.1.1",
+            "json-schema-traverse": "^1.0.0",
+            "require-from-string": "^2.0.2",
+            "uri-js": "^4.2.2"
+          }
+        },
+        "json-schema-traverse": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/json-schema-traverse/-/json-schema-traverse-1.0.0.tgz",
+          "integrity": "sha512-NM8/P9n3XjXhIZn1lLhkFaACTOURQXjWhV4BA/RnOv8xvgqtqpAX9IO4mRQxSx1Rlo4tqzeqb0sOlruaOy3dug==",
+          "dev": true
+        },
+        "semver": {
+          "version": "7.3.7",
+          "resolved": "https://registry.npmjs.org/semver/-/semver-7.3.7.tgz",
+          "integrity": "sha512-QlYTucUYOews+WeEujDoEGziz4K6c47V/Bd+LjSSYcA94p+DmINdf7ncaUinThfvZyu13lN9OY1XDxt8C0Tw0g==",
+          "dev": true,
+          "requires": {
+            "lru-cache": "^6.0.0"
+          }
+        }
+      }
+    },
+    "html-validator": {
+      "version": "6.0.0",
+      "resolved": "https://registry.npmjs.org/html-validator/-/html-validator-6.0.0.tgz",
+      "integrity": "sha512-enYhitRLJGHbuCilv+BzZHU1zezdSRq9ZdusULUE+2lKyQCJh6HcDS9kmhfa9ZvcW92RfUu2LG/nUCDwThLGpA==",
+      "dev": true,
+      "requires": {
+        "axios": "0.24.0",
+        "html-validate": "6.1.3",
+        "valid-url": "1.0.9"
+      },
+      "dependencies": {
+        "axios": {
+          "version": "0.24.0",
+          "resolved": "https://registry.npmjs.org/axios/-/axios-0.24.0.tgz",
+          "integrity": "sha512-Q6cWsys88HoPgAaFAVUb0WpPk0O8iTeisR9IMqy9G8AbO4NlpVknrnQS03zzF9PGAWgO3cgletO3VjV/P7VztA==",
+          "dev": true,
+          "requires": {
+            "follow-redirects": "^1.14.4"
+          }
+        }
+      }
+    },
     "html-webpack-plugin": {
       "version": "4.5.2",
       "resolved": "https://registry.npmjs.org/html-webpack-plugin/-/html-webpack-plugin-4.5.2.tgz",
@@ -35271,6 +35668,15 @@
       "resolved": "https://registry.npmjs.org/jsesc/-/jsesc-2.5.2.tgz",
       "integrity": "sha512-OYu7XEzjkCQ3C5Ps3QIZsQfNpqoJyZZA99wd9aWd05NCtC5pWOkShK2mkL6HXQR6/Cy2lbNdPlZBpuQHXE63gA=="
     },
+    "json-merge-patch": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/json-merge-patch/-/json-merge-patch-1.0.2.tgz",
+      "integrity": "sha512-M6Vp2GN9L7cfuMXiWOmHj9bEFbeC250iVtcKQbqVgEsDVYnIsrNsbU+h/Y/PkbBQCtEa4Bez+Ebv0zfbC8ObLg==",
+      "dev": true,
+      "requires": {
+        "fast-deep-equal": "^3.1.3"
+      }
+    },
     "json-parse-better-errors": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/json-parse-better-errors/-/json-parse-better-errors-1.0.2.tgz",
@@ -35342,6 +35748,12 @@
       "resolved": "https://registry.npmjs.org/kind-of/-/kind-of-6.0.3.tgz",
       "integrity": "sha512-dcS1ul+9tmeD95T+x28/ehLgd9mENa3LsvDTtzm3vyBEO7RPptvAD+t44WVXaUjTBRcrpFeFlC8WCruUR456hw=="
     },
+    "kleur": {
+      "version": "4.1.4",
+      "resolved": "https://registry.npmjs.org/kleur/-/kleur-4.1.4.tgz",
+      "integrity": "sha512-8QADVssbrFjivHWQU7KkMgptGTl6WAcSdlbBPY4uNF+mWr6DGcKrvY2w4FQJoXch7+fKMjj0dRrL75vk3k23OA==",
+      "dev": true
+    },
     "klona": {
       "version": "2.0.5",
       "resolved": "https://registry.npmjs.org/klona/-/klona-2.0.5.tgz",
@@ -40092,6 +40504,24 @@
       "resolved": "https://registry.npmjs.org/promise-inflight/-/promise-inflight-1.0.1.tgz",
       "integrity": "sha1-mEcocL8igTL8vdhoEputEsPAKeM="
     },
+    "prompts": {
+      "version": "2.4.2",
+      "resolved": "https://registry.npmjs.org/prompts/-/prompts-2.4.2.tgz",
+      "integrity": "sha512-NxNv/kLguCA7p3jE8oL2aEBsrJWgAakBpgmgK6lpPWV+WuOmY6r2/zbAVnP+T8bQlA0nzHXSJSJW0Hq7ylaD2Q==",
+      "dev": true,
+      "requires": {
+        "kleur": "^3.0.3",
+        "sisteransi": "^1.0.5"
+      },
+      "dependencies": {
+        "kleur": {
+          "version": "3.0.3",
+          "resolved": "https://registry.npmjs.org/kleur/-/kleur-3.0.3.tgz",
+          "integrity": "sha512-eTIzlVOSUR+JxdDFepEYcBMtZ9Qqdef+rnzWdRZuMbOywu5tO2w2N7rqjoANZ5k9vywhL6Br1VRjUIgTQx4E8w==",
+          "dev": true
+        }
+      }
+    },
     "prop-types": {
       "version": "15.8.1",
       "resolved": "https://registry.npmjs.org/prop-types/-/prop-types-15.8.1.tgz",
@@ -41225,6 +41655,12 @@
         "totalist": "^1.0.0"
       }
     },
+    "sisteransi": {
+      "version": "1.0.5",
+      "resolved": "https://registry.npmjs.org/sisteransi/-/sisteransi-1.0.5.tgz",
+      "integrity": "sha512-bLGGlR1QxBcynn2d5YmDX4MGjlZvy2MRBDRNHLJ8VI6l6+9FUiyTFNJ0IveOSP0bcXgVDPRcfGqA0pjaqUpfVg==",
+      "dev": true
+    },
     "slash": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/slash/-/slash-3.0.0.tgz",
@@ -43143,6 +43579,12 @@
       "integrity": "sha512-wa7YjyUGfNZngI/vtK0UHAN+lgDCxBPCylVXGp0zu59Fz5aiGtNXaq3DhIov063MorB+VfufLh3JlF2KdTK3xg==",
       "dev": true
     },
+    "valid-url": {
+      "version": "1.0.9",
+      "resolved": "https://registry.npmjs.org/valid-url/-/valid-url-1.0.9.tgz",
+      "integrity": "sha1-HBRHm0DxOXp1eC8RXkCGRHQzogA=",
+      "dev": true
+    },
     "validate-npm-package-license": {
       "version": "3.0.4",
       "resolved": "https://registry.npmjs.org/validate-npm-package-license/-/validate-npm-package-license-3.0.4.tgz",
diff --git a/packages/core/Headline/index.vue b/packages/core/Headline/index.vue
index 4dc97b28..f2d66154 100644
--- a/packages/core/Headline/index.vue
+++ b/packages/core/Headline/index.vue
@@ -41,6 +41,7 @@ export default {
       return getMax((this.parentLevel - (this.parentLevel % 2)) / 2);
     }
   }
+
 };
 
 function getMax (number) {
diff --git a/packages/core/Slider/index.vue b/packages/core/Slider/index.vue
index 2de580c7..60207533 100644
--- a/packages/core/Slider/index.vue
+++ b/packages/core/Slider/index.vue
@@ -88,12 +88,15 @@ export default {
     sliderIndex++;
   },
 
+  updated () {
+    console.log('test updated');
+  },
+
   async mounted () {
     const { Splide, STATES, extensions } = await getSplide();
     const { Intersection } = extensions;
     this.states = STATES;
-
-    this.splide = new Splide(this.$refs.slider, {
+    this.splide = new Splide(this.$el.querySelector('.splide'), {
       ...this.options,
       pagination: false,
       arrows: false,
@@ -122,7 +125,7 @@ export default {
   },
 
   destroyed () {
-    this.splide.destroy();
+    this.splide?.destroy();
   },
 
   methods: {
diff --git a/packages/core/Structure.vue b/packages/core/Structure.vue
index 41a4f533..746e7957 100644
--- a/packages/core/Structure.vue
+++ b/packages/core/Structure.vue
@@ -60,7 +60,7 @@ export default {
     },
 
     currentTag () {
-      return ['div', 'main'][this.parentLevel] || this.tags[this.currentLevel % this.tags.length];
+      return ['div', 'main', 'div'][this.parentLevel] || this.tags[this.currentLevel % this.tags.length];
     }
   }
 
diff --git a/packages/sample/package.json b/packages/sample/package.json
index eba45744..f33bbd43 100644
--- a/packages/sample/package.json
+++ b/packages/sample/package.json
@@ -38,13 +38,14 @@
     "postcss-functions": "4.0.2",
     "postcss-momentum-scrolling": "3.14.22",
     "postcss-normalize": "10.0.1",
+    "postcss-preset-env": "6.7.0",
     "rucksack-css": "1.0.2",
-    "vue-svg-loader": "0.16.0",
-    "postcss-preset-env": "6.7.0"
+    "vue-svg-loader": "0.16.0"
   },
   "devDependencies": {
     "get-port-please": "2.5.0",
     "h3": "0.7.8",
+    "html-validator": "^6.0.0",
     "jsdom": "19.0.0",
     "listhen": "0.2.11",
     "playwright": "1.21.1",
diff --git a/packages/sample/src/components/organisms/Gallery.vue b/packages/sample/src/components/organisms/Gallery.vue
index 825debe3..dae9a974 100644
--- a/packages/sample/src/components/organisms/Gallery.vue
+++ b/packages/sample/src/components/organisms/Gallery.vue
@@ -1,6 +1,6 @@
 <template>
   <core-structure class="organism-gallery" v-bind="$attrs" v-on="$listeners">
-    <template v-if="headline" #header>
+    <template #header>
       <layout-lost-container>
         <atom-headline class="headline" v-bind="headline" />
       </layout-lost-container>
@@ -25,6 +25,7 @@ export default {
   props: {
     headline: {
       type: Object,
+      required: true,
       default () {
         return null;
       }
diff --git a/packages/sample/src/components/organisms/Infos.vue b/packages/sample/src/components/organisms/Infos.vue
index 7934e62d..5c7744ae 100644
--- a/packages/sample/src/components/organisms/Infos.vue
+++ b/packages/sample/src/components/organisms/Infos.vue
@@ -9,6 +9,9 @@
       <layout-lost-container>
         <atom-rich-text class="content" :value="content" />
         <core-structure>
+          <template #header>
+            <atom-headline class="sub-headline" v-bind="subHeadline" />
+          </template>
           <core-structure v-for="({overline, headline, content}, index) in infos" :key="index">
             <template #header>
               <atom-headline class="sub-content" :text="headline" :overline="overline" />
@@ -48,6 +51,15 @@ export default {
         };
       }
     },
+    subHeadline: {
+      type: Object,
+      default () {
+        return {
+          overline: 'Overline',
+          content: 'SubHeadline'
+        };
+      }
+    },
     content: {
       type: String,
       default: '<p>Text</p>'
@@ -86,6 +98,7 @@ export default {
     }
   }
 
+  & .sub-headline,
   & .sub-content {
     lost-offset: 1 / 12;
     lost-column: 10 / 12;
diff --git a/packages/sample/src/components/organisms/Stage.vue b/packages/sample/src/components/organisms/Stage.vue
index 385610d4..a2b740af 100644
--- a/packages/sample/src/components/organisms/Stage.vue
+++ b/packages/sample/src/components/organisms/Stage.vue
@@ -9,6 +9,7 @@
     </template>
   </core-structure>
 </template>
+
 <script>
 import SpeedkitPicture from 'nuxt-speedkit/components/SpeedkitPicture';
 import CoreStructure from '@foundation/core/Structure';
diff --git a/packages/sample/src/components/organisms/TeaserWall.vue b/packages/sample/src/components/organisms/TeaserWall.vue
index c22cb81b..051f6f92 100644
--- a/packages/sample/src/components/organisms/TeaserWall.vue
+++ b/packages/sample/src/components/organisms/TeaserWall.vue
@@ -1,6 +1,6 @@
 <template>
   <core-structure class="organism-teaser-wall">
-    <template v-if="headline" #header>
+    <template #header>
       <layout-lost-container>
         <div class="headline">
           <atom-headline v-bind="headline" />
@@ -9,9 +9,9 @@
     </template>
     <template #default>
       <layout-lost-container>
-        <div class="teasers">
+        <core-structure class="teasers">
           <molecule-teaser v-for="(teaser, index) in teasers" v-bind="teaser" :key="index" />
-        </div>
+        </core-structure>
       </layout-lost-container>
     </template>
   </core-structure>
@@ -27,6 +27,7 @@ export default {
   props: {
     headline: {
       type: Object,
+      required: true,
       default () {
         return null;
       }
diff --git a/packages/sample/src/components/organisms/TextImage.vue b/packages/sample/src/components/organisms/TextImage.vue
index 6abcd2ef..47c46bd7 100644
--- a/packages/sample/src/components/organisms/TextImage.vue
+++ b/packages/sample/src/components/organisms/TextImage.vue
@@ -5,19 +5,13 @@
         <speedkit-picture v-bind="image" />
       </div>
       <div class="text">
-        <core-structure>
-          <template #header>
-            <atom-headline v-bind="headline" />
-          </template>
-          <template #default>
-            <atom-rich-text :value="content" />
-            <ul class="buttons">
-              <li v-for="(button, index) in buttons" :key="index">
-                <atom-button v-bind="button" />
-              </li>
-            </ul>
-          </template>
-        </core-structure>
+        <atom-headline v-bind="headline" />
+        <atom-rich-text :value="content" />
+        <ul class="buttons">
+          <li v-for="(button, index) in buttons" :key="index">
+            <atom-button v-bind="button" />
+          </li>
+        </ul>
       </div>
     </layout-lost-container>
   </core-structure>
diff --git a/packages/sample/src/pages/index.vue b/packages/sample/src/pages/index.vue
index 70aac98d..90ffab92 100644
--- a/packages/sample/src/pages/index.vue
+++ b/packages/sample/src/pages/index.vue
@@ -77,10 +77,10 @@ export default {
             content: '<p>Lorem ipsum dolor sit amet, <strong>consetetur sadipscing elitr</strong>, <em>sed diam nonumy eirmod tempor invidunt</em> <strong><em>ut labore et dolore magna aliquyam erat</em></strong>, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, <strong>consetetur sadipscing elitr</strong>, sed diam</p> <p>Lorem ipsum dolor sit amet, <strong>consetetur sadipscing elitr</strong>, <em>sed diam nonumy eirmod tempor invidunt</em></p> <ul> <li>List Item 1</li> <li>List Item 2</li> <li>List Item 3</li> </ul> <ol> <li>List Item 1</li> <li>List Item 2</li> <li>List Item 3</li> </ol>'
           }
         },
-        {
-          component: 'OrganismGallery',
-          props: {}
-        },
+        // {
+        //   component: 'OrganismGallery',
+        //   props: {}
+        // },
         {
           component: 'OrganismGallery',
           props: {
@@ -132,10 +132,6 @@ export default {
             content: '<p>Lorem ipsum dolor sit amet, <strong>consetetur sadipscing elitr</strong>, <em>sed diam nonumy eirmod tempor invidunt</em> <strong><em>ut labore et dolore magna aliquyam erat</em></strong>, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, <strong>consetetur sadipscing elitr</strong>, sed diam</p> <p>Lorem ipsum dolor sit amet, <strong>consetetur sadipscing elitr</strong>, <em>sed diam nonumy eirmod tempor invidunt</em></p> <ul> <li>List Item 1</li> <li>List Item 2</li> <li>List Item 3</li> </ul> <ol> <li>List Item 1</li> <li>List Item 2</li> <li>List Item 3</li> </ol>'
           }
         },
-        {
-          component: 'OrganismTeaserWall',
-          props: {}
-        },
         {
           component: 'OrganismTeaserWall',
           props: {
diff --git a/packages/sample/src/pages/test.vue b/packages/sample/src/pages/test.vue
new file mode 100644
index 00000000..33dfbfa6
--- /dev/null
+++ b/packages/sample/src/pages/test.vue
@@ -0,0 +1,64 @@
+
+<template>
+  <core-structure id="layout">
+    <core-structure id="page">
+      <core-structure>
+        <component
+          :is="component"
+          v-for="({component, props}, index) in content.slice(0,1)"
+          :key="index"
+          v-bind="props"
+          critical
+        />
+        <core-structure>
+          <component
+            :is="component"
+            v-for="({component, props}, index) in content.slice(1)"
+            :key="index"
+            v-bind="props"
+            :critical="index < 1"
+          />
+        </core-structure>
+      </core-structure>
+    </core-structure>
+  </core-structure>
+</template>
+
+<script>
+
+import speedkitHydrate from 'nuxt-speedkit/hydrate';
+import CoreStructure from '@foundation/core/Structure';
+
+export default {
+  layout: 'test',
+  components: {
+    CoreStructure,
+    OrganismStage: speedkitHydrate(() => import('@/components/organisms/Stage')),
+    OrganismText: speedkitHydrate(() => import('@/components/organisms/Text')),
+    OrganismGallery: speedkitHydrate(() => import('@/components/organisms/Gallery')),
+    OrganismTextImage: speedkitHydrate(() => import('@/components/organisms/TextImage')),
+    OrganismTeaserWall: speedkitHydrate(() => import('@/components/organisms/TeaserWall')),
+    OrganismAccordeon: speedkitHydrate(() => import('@/components/organisms/Accordeon')),
+    OrganismInfos: speedkitHydrate(() => import('@/components/organisms/Infos'))
+
+  },
+  data () {
+    return {
+
+      content: [
+        {
+          component: 'OrganismGallery',
+          props: {
+            headline: {
+              overline: null,
+              text: 'Gallery'
+            }
+          }
+        }
+      ]
+
+    };
+  }
+};
+
+</script>
diff --git a/packages/sample/src/pages/tests/headline.vue b/packages/sample/src/pages/tests/headline.vue
index 491ffc2a..9e9c831b 100644
--- a/packages/sample/src/pages/tests/headline.vue
+++ b/packages/sample/src/pages/tests/headline.vue
@@ -7,47 +7,92 @@
             Headline (H1)
           </core-headline>
         </template>
+        <p>…</p>
         <core-structure>
           <template #header>
-            <core-headline id="headline2">
-              Headline (h2)
+            <core-headline id="headline2_1">
+              Headline (H2)
             </core-headline>
           </template>
+          <p>…</p>
           <core-structure>
+            <template #header>
+              <core-headline id="headline2_2">
+                Headline (H2)
+              </core-headline>
+            </template>
+            <p>…</p>
             <core-structure>
               <template #header>
-                <core-headline id="headline3">
-                  Headline (h3)
+                <core-headline id="headline3_1">
+                  Headline (H3)
                 </core-headline>
               </template>
+              <p>…</p>
               <core-structure>
+                <template #header>
+                  <core-headline id="headline3_2">
+                    Headline (H3)
+                  </core-headline>
+                </template>
+                <p>…</p>
                 <core-structure>
                   <template #header>
-                    <core-headline id="headline4">
-                      Headline (h4)
+                    <core-headline id="headline4_1">
+                      Headline (H4)
                     </core-headline>
                   </template>
+                  <p>…</p>
                   <core-structure>
+                    <template #header>
+                      <core-headline id="headline4_2">
+                        Headline (H4)
+                      </core-headline>
+                    </template>
+                    <p>…</p>
                     <core-structure>
                       <template #header>
-                        <core-headline id="headline5">
-                          Headline (h5)
+                        <core-headline id="headline5_1">
+                          Headline (H5)
                         </core-headline>
                       </template>
+                      <p>…</p>
                       <core-structure>
+                        <template #header>
+                          <core-headline id="headline5_2">
+                            Headline (H5)
+                          </core-headline>
+                        </template>
+                        <p>…</p>
                         <core-structure>
                           <template #header>
-                            <core-headline id="headline6">
-                              Headline (h6)
+                            <core-headline id="headline6_1">
+                              Headline (H6)
                             </core-headline>
                           </template>
+                          <p>…</p>
                           <core-structure>
+                            <template #header>
+                              <core-headline id="headline6_2">
+                                Headline (H6)
+                              </core-headline>
+                            </template>
+                            <p>…</p>
                             <core-structure>
                               <template #header>
-                                <core-headline id="headline7">
-                                  Headline (h6)
+                                <core-headline id="headline7_1">
+                                  Headline (H6)
                                 </core-headline>
                               </template>
+                              <p>…</p>
+                              <core-structure>
+                                <template #header>
+                                  <core-headline id="headline7_2">
+                                    Headline (H6)
+                                  </core-headline>
+                                </template>
+                                <p>…</p>
+                              </core-structure>
                             </core-structure>
                           </core-structure>
                         </core-structure>
diff --git a/packages/sample/src/pages/tests/structure.vue b/packages/sample/src/pages/tests/structure.vue
index ca48bca3..a89aec57 100644
--- a/packages/sample/src/pages/tests/structure.vue
+++ b/packages/sample/src/pages/tests/structure.vue
@@ -27,9 +27,12 @@
 
           <!-- Second Content Component -->
           <core-structure id="secondaryContentComponent">
+            <template #header>
+              <core-headline>Content Component With Content Section</core-headline>
+            </template>
             <core-structure>
               <template #header>
-                <core-headline>Content Component With Content Section</core-headline>
+                <core-headline>Content Section</core-headline>
               </template>
               <p>Lorem ipsum…</p>
             </core-structure>
@@ -42,6 +45,9 @@
             </template>
             <p>Lorem ipsum…</p>
             <core-structure>
+              <template #header>
+                <core-headline>Inner Articles</core-headline>
+              </template>
               <!-- Inner Component 1 -->
               <core-structure>
                 <template #header>
diff --git a/packages/sample/test/default.test.js b/packages/sample/test/default.test.js
index 8f4b9cc3..b4424cb4 100644
--- a/packages/sample/test/default.test.js
+++ b/packages/sample/test/default.test.js
@@ -1,6 +1,9 @@
 /* eslint-disable no-secrets/no-secrets */
 import { join, resolve } from 'path';
+import { promises } from 'fs';
 import { beforeAll, describe, it, expect } from 'vitest';
+import { joinURL } from 'ufo';
+import validator from 'html-validator';
 import {
   startStaticServer,
   getDom,
@@ -20,6 +23,27 @@ beforeAll(async () => {
 });
 
 describe('🧐 inspect generated html', () => {
+  const paths = [
+    '/structure',
+    '/headline'
+  ];
+
+  paths.forEach((path) => {
+    it(`W3C ${path}`, async () => {
+      const url = joinURL(runtime.serverUrl, path);
+      const options = {
+        url,
+        format: 'text',
+        data: await promises.readFile(joinURL(process.cwd(), './test/.test/dist', path, 'index.html'), 'utf8')
+      };
+      const result = await validator(options);
+      console.log(`"${result}"`);
+      if (!result.startsWith('The document validates according to the specified schema(s).')) {
+        throw new Error(`Url: ${url}\n${result}`);
+      }
+    });
+  });
+
   markupTests();
 });
 
@@ -38,11 +62,11 @@ function markupTests () {
     expect(dom.querySelector('main#page')).not.toBeNull();
     // pageDescribeComponent
 
-    expect(dom.querySelector('section#pageDescribeComponent')).not.toBeNull();
-    expect(dom.querySelector('section#pageDescribeComponent > header h1')).not.toBeNull();
+    expect(dom.querySelector('div#pageDescribeComponent')).not.toBeNull();
+    expect(dom.querySelector('div#pageDescribeComponent > header h1')).not.toBeNull();
 
     // pageComponents
-    expect(dom.querySelector('section#pageComponents')).not.toBeNull();
+    expect(dom.querySelector('div#pageComponents')).not.toBeNull();
 
     // firstContentComponent
     expect(dom.querySelector('article#firstContentComponent')).not.toBeNull();
@@ -66,11 +90,18 @@ function markupTests () {
     dom = getDom(html);
 
     expect(dom.querySelector('h1#headline1')).not.toBeNull();
-    expect(dom.querySelector('h2#headline2')).not.toBeNull();
-    expect(dom.querySelector('h3#headline3')).not.toBeNull();
-    expect(dom.querySelector('h4#headline4')).not.toBeNull();
-    expect(dom.querySelector('h5#headline5')).not.toBeNull();
-    expect(dom.querySelector('h6#headline6')).not.toBeNull();
-    expect(dom.querySelector('h6#headline7')).not.toBeNull(); // Clamp Headline Level 6
+    expect(dom.querySelector('h2#headline2_1')).not.toBeNull();
+    expect(dom.querySelector('h2#headline2_2')).not.toBeNull();
+    expect(dom.querySelector('h3#headline3_1')).not.toBeNull();
+    expect(dom.querySelector('h3#headline3_2')).not.toBeNull();
+    expect(dom.querySelector('h4#headline4_1')).not.toBeNull();
+    expect(dom.querySelector('h4#headline4_2')).not.toBeNull();
+    expect(dom.querySelector('h5#headline5_1')).not.toBeNull();
+    expect(dom.querySelector('h5#headline5_2')).not.toBeNull();
+    expect(dom.querySelector('h6#headline6_1')).not.toBeNull();
+    expect(dom.querySelector('h6#headline6_2')).not.toBeNull();
+    expect(dom.querySelector('h6#headline7_1')).not.toBeNull();
+
+    // Clamp Headline Level 6
   });
 }