1.CSS
<link th:href="@{/css/bootstrap.min.css}" rel="stylesheet" type="text/css" />
href attribute is introduced, which starts with writing @} {path and file name: The link tag th
2.JS
<script type="text/javascript" th:src="@{/js/bootstrap.bundle.min.js}"></script>
src = attribute is introduced, which starts with writing @} {path and file name: The script tag th
JS and CSS placed under static directory