correct search page UI

src/main/resources/templates/search.html

@@ -13,7 +13,6 @@
         <div th:replace="~{fragments/header :: ${#authorization.expression('isAuthenticated()')} ? 'header-auth' : 'header-anon'}"></div>
         <div class="container base">
             <div th:if="${books} != null">
-                <hr>
                 <h3>Titles</h3>
                 <div th:each="book : ${books}">
                     <a th:href="${'/book/' + book.id}">