hint in list

_includes/tool.html

 <a href="{{ site.baseurl }}{{ tool.url }}"><h4 id="{{tool.uid}}">{{tool.name}}</h4></a>
+{% if tool.safetybriefing -%}
+          <div style="line-height: 18pt; margin:10px 0; width: 100%; background-color: #FFF8DC; border-width: 1em; border-color: #FDDA0D; border-radius: 10px; min-height: 40pt; vertical-align: middle;">
+              <span style="float: left; color: #e67206; font-size: 40pt; display:block; width: 50pt; height: 40pt; text-align:center; line-height: 40pt;">⚠</span>Um dieses Gerät benutzen zu dürfen benötigst du eine <a href="{{ site.baseurl }}{{ tool.url }}briefing/">Einweisung</a>!
+          </div>
+      {% endif -%}
 {{ tool.excerpt | strip_html | markdownify | truncatewords: 60 }}<a href="{{ site.baseurl }}{{ tool.url }}">mehr</a>