1. Fix the bug that sometimes the latest comments exceed the container.

2. Add search function.
3. Fix the problem of the directory being too long and exceeding the screen.
4. Fix the issue where the directory rendering is abnormal in some cases.
5. Other minor optimizations.

src/Ankia-Theme.css

@@ -1,5 +1,5 @@
 /*!
- * Ankia-Theme v1.4
+ * Ankia-Theme v1.5
  * https://ankia.top/
  *
  * Licensed Apache-2.0 © 东东
@@ -347,6 +347,9 @@ a {
     opacity: 0;
     display: none;
   }
+  .searchContainerStyle {
+    width: 80% !important;
+  }
 }
 
 #title {
@@ -641,6 +644,9 @@ iframe.pdf-view {
   animation: fromRightToLeftAppearing 1s ease-in-out;
   border-left: 2px solid #d9dde4;
   padding-left: 15px;
+  margin-right: 15px;
+  max-height: 80vh;
+  overflow: auto;
 }
 
 .tocActive {
@@ -906,6 +912,11 @@ ul#toc {
   text-align: justify;
 }
 
+#latestComment {
+  display: flex;
+  flex-direction: column;
+}
+
 #mobileMenuContainer {
   margin-top: 60px;
   display: none;
@@ -1007,3 +1018,54 @@ ul#toc {
   background: #999999;
   transform: translateY(-5px);
 }
+
+/*搜索*/
+.searchContainerStyle {
+  position: fixed;
+  top: 80px;
+  display: none;
+  align-items: center;
+  background-color: #fff;
+  border-radius: 5px;
+  flex-direction: column;
+  width: 50%;
+  cursor: pointer;
+  box-shadow: 0 1px 3px rgb(0 0 0 / 18%);
+  padding: 20px;
+  z-index: 1000;
+  max-height: 60%;
+  overflow: auto;
+  animation: slideIn 0.5s ease-in-out;
+}
+
+#searchInput {
+  border: none;
+  border-bottom: 1px solid blanchedalmond;
+  padding: 5px;
+  width: 90%;
+  outline: none;
+}
+
+.searchItems {
+  font-weight: bold;
+}
+.itemsTitle {
+  margin: 0.4em 0em;
+  padding-left: 0.5em;
+  border-left: 1px solid #d9d3d3;
+}
+.searchItems:hover {
+  color: burlywood;
+}
+
+#searchResults {
+  width: 90%;
+  margin-top: 1em;
+}
+
+#toc-pane::-webkit-scrollbar {
+  width: 1px;
+}
+#toc-pane::-webkit-scrollbar-thumb {
+  background-color: var(--blue);
+}