xmlns="http://www.w3.org/1999/xhtml"
xmlns:layout="http://www.thymeleaf.org"
xmlns:th="http://www.thymeleaf.org"
- layout:decorator="templates/testlab"
+ layout:decorator="/templates/testlab"
th:with="title='Media-Query-Test: BEISPIEL', uri='/potemkin/html-experimente/testlab.html'"
>
<head>