"></x-code-viewer>
                </x-tab>
                <x-tab title="index.js">
                    <x-code-viewer src="./examples/sites/page/index.js" name=""></x-code-viewer>
                </x-tab>
            </x-tab-panel>
            
            <h3>Semantics matter</h3>

            <p>
                The markup in the page should default to using semantic HTML, to improve accessibility and SEO.
                Web components should only be used in those cases where the level of complexity an