diff --git a/en/sitemap.xml.gz b/en/sitemap.xml.gz
index 6c4f58dab..5ff100f9b 100644
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diff --git a/index.html b/index.html
index 66e8f022b..9ee9414de 100644
--- a/index.html
+++ b/index.html
@@ -239,7 +239,7 @@
         <img src="assets/hero/universe_bg.png" class="hero-bg">
       
         <!-- heading and buttons -->
-        <div style="width: 100%; position: absolute; transform: translateX(-50%); left: 49%; bottom: min(2vh, 3vw);">
+        <div style="width: 100%; position: absolute; transform: translateX(-50%); left: 50%; bottom: min(2vh, 3vw);">
           <img style="height: min(9vh, 12vw);"
             src="https://readme-typing-svg.demolab.com/?font=Noto+Sans+SC&weight=400&duration=3500&pause=2000&color=FFF&center=true&vCenter=true&random=false&width=200&lines=Hello%2C+%E7%AE%97%E6%B3%95+!"
             alt="hello-algo-typing-svg" />
@@ -289,77 +289,77 @@
         <div class="hero-image-div">
           <!-- planets -->
           <img src="assets/hero/ground.png"
-            style="position: absolute; width: auto; height: 26.445%; left: 27.211%; top: 54.145%;">
+            style="position: absolute; width: auto; height: 26.445%; left: 28.211%; top: 54.145%;">
           <img src="assets/hero/links.png"
-            style="position: absolute; width: auto; height: 78.751%; left: 9.545%; top: 7.326%;">
+            style="position: absolute; width: auto; height: 78.751%; left: 10.545%; top: 7.326%;">
           <a href="https://www.hello-algo.com/chapter_introduction/">
-            <img class="hero-on-hover" src="assets/hero/astronaut.png" style="height: 46.673%; left: 34.413%; top: 24.343%;">
-            <p class="hero-caption" style="left: 51.244%; top: 20.919%;">初识算法</p>
+            <img class="hero-on-hover" src="assets/hero/astronaut.png" style="height: 46.673%; left: 35.413%; top: 24.343%;">
+            <p class="hero-caption" style="left: 52.244%; top: 20.919%;">初识算法</p>
           </a>
           <a href="https://www.hello-algo.com/chapter_computational_complexity/">
             <img class="hero-on-hover" src="assets/hero/chapter_computational_complexity.png"
-              style="height: 12.347%; left: 35.267%; top: 37.653%;">
-            <p class="hero-caption" style="left: 38.244%; top: 33.919%;">复杂度</p>
+              style="height: 12.347%; left: 36.267%; top: 37.653%;">
+            <p class="hero-caption" style="left: 39.244%; top: 33.919%;">复杂度</p>
           </a>
           <a href="https://www.hello-algo.com/chapter_array_and_linkedlist/">
             <img class="hero-on-hover" src="assets/hero/chapter_array_and_linkedlist.png"
-              style="height: 22.242%; left: 72.242%; top: 52.481%;">
-            <p class="hero-caption" style="left: 87.297%; top: 77.059%;">数组与链表</p>
+              style="height: 22.242%; left: 73.242%; top: 52.481%;">
+            <p class="hero-caption" style="left: 90.897%; top: 76.259%;">数组与链表</p>
           </a>
           <a href="https://www.hello-algo.com/chapter_stack_and_queue/">
             <img class="hero-on-hover" src="assets/hero/chapter_stack_and_queue.png"
-              style="height: 14.302%; left: 61.646%; top: 77.875%;">
-            <p class="hero-caption" style="left: 77.071%; top: 89.25%;">栈与队列</p>
+              style="height: 14.302%; left: 62.646%; top: 77.875%;">
+            <p class="hero-caption" style="left: 78.371%; top: 90.25%;">栈与队列</p>
           </a>
           <a href="https://www.hello-algo.com/chapter_hashing/">
             <img class="hero-on-hover" src="assets/hero/chapter_hashing.png"
-              style="height: 15.266%; left: 62.281%; top: 27.933%;">
-            <p class="hero-caption" style="left: 67.862%; top: 46.292%;">哈希表</p>
+              style="height: 15.266%; left: 63.281%; top: 27.933%;">
+            <p class="hero-caption" style="left: 68.862%; top: 46.292%;">哈希表</p>
           </a>
           <a href="https://www.hello-algo.com/chapter_tree/">
             <img class="hero-on-hover" src="assets/hero/chapter_tree.png"
-              style="height: 19.615%; left: 79.137%; top: 26.678%;">
-            <p class="hero-caption" style="left: 95.159%; top: 44.8%;">树</p>
+              style="height: 19.615%; left: 80.137%; top: 26.678%;">
+            <p class="hero-caption" style="left: 96.159%; top: 44.8%;">树</p>
           </a>
           <a href="https://www.hello-algo.com/chapter_heap/">
             <img class="hero-on-hover" src="assets/hero/chapter_heap.png"
-              style="height: 10.566%; left: 76.226%; top: 11.559%;">
-            <p class="hero-caption" style="left: 87.103%; top: 15.422%;">堆</p>
+              style="height: 10.566%; left: 77.226%; top: 11.559%;">
+            <p class="hero-caption" style="left: 88.103%; top: 15.422%;">堆</p>
           </a>
           <a href="https://www.hello-algo.com/chapter_graph/">
             <img class="hero-on-hover" src="assets/hero/chapter_graph.png"
-              style="height: 16.112%; left: 50.854%; top: 5.575%;">
-            <p class="hero-caption" style="left: 70.195%; top: 6.503%;">图</p>
+              style="height: 16.112%; left: 51.854%; top: 5.575%;">
+            <p class="hero-caption" style="left: 71.195%; top: 6.503%;">图</p>
           </a>
           <a href="https://www.hello-algo.com/chapter_searching/">
             <img class="hero-on-hover" src="assets/hero/chapter_searching.png"
-              style="height: 15.149%; left: 17.185%; top: 16.404%;">
-            <p class="hero-caption" style="left: 13.556%; top: 20.876%;">搜索</p>
+              style="height: 15.149%; left: 18.185%; top: 16.404%;">
+            <p class="hero-caption" style="left: 14.556%; top: 20.876%;">搜索</p>
           </a>
           <a href="https://www.hello-algo.com/chapter_sorting/">
             <img class="hero-on-hover" src="assets/hero/chapter_sorting.png"
-              style="height: 9.574%; left: 24.409%; top: 40.747%;">
-            <p class="hero-caption" style="left: 27.805%; top: 53.808%;">排序</p>
+              style="height: 9.574%; left: 25.409%; top: 40.747%;">
+            <p class="hero-caption" style="left: 28.805%; top: 53.808%;">排序</p>
           </a>
           <a href="https://www.hello-algo.com/chapter_divide_and_conquer/">
             <img class="hero-on-hover" src="assets/hero/chapter_divide_and_conquer.png"
-              style="height: 18.681%; left: 31.721%; top: 4.816%;">
-            <p class="hero-caption" style="left: 30.42%; top: 8.679%;">分治</p>
+              style="height: 18.681%; left: 32.721%; top: 4.816%;">
+            <p class="hero-caption" style="left: 31.42%; top: 8.679%;">分治</p>
           </a>
           <a href="https://www.hello-algo.com/chapter_backtracking/">
             <img class="hero-on-hover" src="assets/hero/chapter_backtracking.png"
-              style="height: 17.338%; left: 3.875%; top: 32.925%;">
-            <p class="hero-caption" style="left: 3.742%; top: 50.113%;">回溯</p>
+              style="height: 17.338%; left: 4.875%; top: 32.925%;">
+            <p class="hero-caption" style="left: 4.742%; top: 50.113%;">回溯</p>
           </a>
           <a href="https://www.hello-algo.com/chapter_dynamic_programming/">
             <img class="hero-on-hover" src="assets/hero/chapter_dynamic_programming.png"
-              style="height: 15.47%; left: 8.406%; top: 57.472%;">
-            <p class="hero-caption" style="left: 7.561%; top: 75.351%;">动态规划</p>
+              style="height: 15.47%; left: 9.406%; top: 57.472%;">
+            <p class="hero-caption" style="left: 8.561%; top: 75.351%;">动态规划</p>
           </a>
           <a href="https://www.hello-algo.com/chapter_greedy/">
             <img class="hero-on-hover" src="assets/hero/chapter_greedy.png"
-              style="height: 14.127%; left: 22.132%; top: 75.803%;">
-            <p class="hero-caption" style="left: 20.619%; top: 86.85%;">贪心</p>
+              style="height: 14.127%; left: 23.132%; top: 75.803%;">
+            <p class="hero-caption" style="left: 21.619%; top: 86.85%;">贪心</p>
           </a>
         </div>
       </section>
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index 3bf69fce9..153b430f8 100644
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