xmlns="http://www.w3.org/1999/xhtml"
xmlns:layout="http://www.thymeleaf.org"
xmlns:th="http://www.thymeleaf.org"
- layout:decorator="templates/layout"
+ layout:decorator="/templates/layout.html"
th:with="contentclass='onecolumn', uri='/projects/html-experimente/fast-leer-einspaltig.html'"
>
<head>