style(post): enhance post separator and adjust tag display for improved layout

templates/archives.html

@@ -15,9 +15,20 @@
                   <span class="post-date" th:text="${#dates.format(post.spec.publishTime,'yyyy-MM-dd')}"
                     >发布时间</span
                   >
-                  :: <span class="post-list-title" th:text="${post.spec.title}">文章标题</span></a>
+                  <span class="post-separator">
+                    <span></span>
+                    <span></span>
+                    <span></span>
+                    <span></span>
+                  </span>
+                  <span class="post-list-title" th:text="${post.spec.title}">文章标题</span></a>
                   <span class="post-tags-inline">
-                    ::
+                    <span class="post-separator">
+                      <span></span>
+                      <span></span>
+                      <span></span>
+                      <span></span>
+                    </span>
                     <span th:each="tag : ${post.tags}">
                       <a
                       th:href="${tag.status.permalink}"