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components/i/library/header.vue

 <template>
-    <div class="container max-w-screen-lg flex flex-col p-6">
-        <div class="flex justify-between items-center">
-            <div class="flex">
-                <div class="flex items-center text-xl gap-2" v-if="!collect">
-                    <UIcon name="i-heroicons-rectangle-stack-20-solid" />
-                    <div>主题</div>
+    <div class="flex flex-col w-full items-center sticky top-0 bg-white dark:bg-black z-10">
+        <div class="container max-w-screen-lg flex flex-col p-6">
+            <div class="flex justify-between items-center">
+                <div class="flex gap-4">
+                    <div class="flex items-center text-xl gap-2" v-if="!collect">
+                        <UIcon name="i-heroicons-rectangle-stack-20-solid" />
+                        <div>主题</div>
+                    </div>
+                    <template v-else>
+                        <UButton
+                            icon="i-heroicons-chevron-left"
+                            color="gray"
+                            variant="ghost"
+                            to="/library"
+                        />
+                        <div class="flex items-center text-xl gap-2">
+                            <UIcon name="i-heroicons-squares-2x2" />
+                            <div>{{ collect }}</div>
+                        </div>
+                    </template>
                 </div>
-                <div class="flex items-center text-xl gap-2" v-else>
-                    <UIcon name="i-heroicons-squares-2x2" />
-                    <div>{{ collect }}</div>
+                <div class="flex">
+                    <UInput
+                        v-model="searchQuery"
+                        icon="i-heroicons-magnifying-glass-20-solid"
+                        placeholder="搜索你的主题..."
+                        size="md"
+                    />
                 </div>
             </div>
-            <div class="flex">
-                <UInput
-                    v-model="searchQuery"
-                    icon="i-heroicons-magnifying-glass-20-solid"
-                    placeholder="搜索你的主题..."
-                    size="md"
-                />
-            </div>
         </div>
+        <UDivider />
     </div>
-    <UDivider />
 </template>
 <script setup>
 defineProps({

pages/library/[id].vue

 <template>
     <div class="w-full items-center flex flex-col">
         <ILibraryHeader collect="前端开发" />
+        <div class="container max-w-screen-lg flex flex-col p-6">
+            <div class="flex gap-10">
+                <div class="flex flex-col flex-grow">
+                    <div class="flex flex-col gap-4">
+                        <ILibraryThread />
+                        <ILibraryThread />
+                        <ILibraryThread />
+                        <ILibraryThread />
+                        <ILibraryThread />
+                    </div>
+                </div>
+            </div>
+        </div>
     </div>
 </template>
 <script setup>