Observation Details
The sidebar section "Vorteile im Überblick" uses visual presentation (and CSS classes) of a heading structure that is not reflected in the HTML markup. Visual presentation MUST match code markup.
Remediation Notes
Use proper semantic HTML headings to indicate the structure of the sidebar content.
<h2>Vorteile im Überblick</h2>
<h3>MagentaEINS Vorteil</h3>
<p>...</p>
<p><a href="...">...</a></p>