diff --git a/en/index.html b/en/index.html
index 83f665a17..a6cbeac63 100644
--- a/en/index.html
+++ b/en/index.html
@@ -114,18 +114,18 @@
           <a href="chapter_introduction/">
             <img alt="" src="../assets/hero/astronaut.png" style="height: 46.673%; left: 35.413%; top: 24.343%;"/>
             <span style="left: 52.744%; top: 22.319%;">
-              Encounter with Algorithms
+              Encounter with Algos
             </span>
           </a>
           <a href="chapter_computational_complexity/">
             <img alt="" src="../assets/hero/chapter_computational_complexity.png" style="height: 12.347%; left: 36.267%; top: 37.653%;"/>
-            <span style="left: 40.244%; top: 33.919%;">
+            <span style="left: 36.244%; top: 34.919%;">
               Complexity analysis
             </span>
           </a>
           <a href="chapter_array_and_linkedlist/">
             <img alt="" src="../assets/hero/chapter_array_and_linkedlist.png" style="height: 22.242%; left: 73.242%; top: 52.481%;"/>
-            <span style="left: 90.897%; top: 76.259%;">
+            <span style="left: 85.897%; top: 76.259%;">
               Array and linked list
             </span>
           </a>
@@ -137,7 +137,7 @@
           </a>
           <a href="chapter_hashing/">
             <img alt="" src="../assets/hero/chapter_hashing.png" style="height: 15.266%; left: 63.281%; top: 27.933%;"/>
-            <span style="left: 68.862%; top: 46.292%;">
+            <span style="left: 68.862%; top: 45.792%;">
               Hash table
             </span>
           </a>
@@ -167,7 +167,7 @@
           </a>
           <a href="chapter_sorting/">
             <img alt="" src="../assets/hero/chapter_sorting.png" style="height: 9.574%; left: 25.409%; top: 40.747%;"/>
-            <span style="left: 28.805%; top: 53.808%;">
+            <span style="left: 28.805%; top: 53.308%;">
               Sorting
             </span>
           </a>
@@ -179,13 +179,13 @@
           </a>
           <a href="chapter_backtracking/">
             <img alt="" src="../assets/hero/chapter_backtracking.png" style="height: 17.338%; left: 4.875%; top: 32.925%;"/>
-            <span style="left: 4.742%; top: 50.113%;">
+            <span style="left: 8.742%; top: 50.113%;">
               Backtracking
             </span>
           </a>
           <a href="chapter_dynamic_programming/">
             <img alt="" src="../assets/hero/chapter_dynamic_programming.png" style="height: 15.47%; left: 9.406%; top: 57.472%;"/>
-            <span style="left: 8.561%; top: 75.351%;">
+            <span style="left: 14.561%; top: 75.351%;">
               Dynamic programming
             </span>
           </a>
@@ -197,7 +197,7 @@
           </a>
         </div>
         <div class="heading-div">
-          <img alt="" src="https://readme-typing-svg.demolab.com?font=Noto+Sans+SC&amp;weight=400&amp;duration=3500&amp;pause=2000&amp;color=21C8B8&amp;center=true&amp;vCenter=true&amp;random=false&amp;width=200&amp;lines=Hello%2C+Algo+!" style="height: min(9vh, 12vw);"/>
+          <img alt="" src="https://readme-typing-svg.demolab.com/?font=Noto+Sans+SC&amp;weight=400&amp;duration=3500&amp;pause=2000&amp;color=FFF&amp;center=true&amp;vCenter=true&amp;random=false&amp;width=200&amp;lines=Hello%2C+Algo+!" style="height: min(9vh, 12vw);"/>
           <div style="pointer-events: auto;">
             <p style="margin-top: max(-1vh, -2vw); margin-bottom: min(2vh, 3.5vw);">
               Data structures and algorithms crash course with animated illustrations and off-the-shelf code
@@ -250,7 +250,7 @@
             <img alt="" src="https://img.shields.io/badge/Zig-snow?logo=zig&amp;logoColor=F7A41D"/>
           </div>
           <p style="margin-top: 2em;">
-            500 animated illustrations, 14 programming languages, and 3000 community Q&amp;As to help you quickly get started with data structures and algorithms
+            500 animated illustrations, 14 programming languages, and 3000 community Q&amp;As to help you dive into data structures and algorithms.
           </p>
         </div>
       </section>
@@ -282,7 +282,7 @@
                 </div>
                 <div class="text-button">
                   <span>
-                    Read online
+                    Web
                   </span>
                   <svg viewbox="0 0 320 512" xmlns="http://www.w3.org/2000/svg">
                     <path d="M278.6 233.4c12.5 12.5 12.5 32.8 0 45.3l-160 160c-12.5 12.5-32.8 12.5-45.3 0s-12.5-32.8 0-45.3L210.7 256 73.4 118.6c-12.5-12.5-12.5-32.8 0-45.3s32.8-12.5 45.3 0l160 160z">
@@ -296,7 +296,7 @@
                 <img alt="" class="device-on-hover" src="../assets/hero/pdf_ipad.png" style="height: 75%;"/>
                 <div class="text-button">
                   <span>
-                    Download PDF
+                    PDF
                   </span>
                   <svg viewbox="0 0 320 512" xmlns="http://www.w3.org/2000/svg">
                     <path d="M278.6 233.4c12.5 12.5 12.5 32.8 0 45.3l-160 160c-12.5 12.5-32.8 12.5-45.3 0s-12.5-32.8 0-45.3L210.7 256 73.4 118.6c-12.5-12.5-12.5-32.8 0-45.3s32.8-12.5 45.3 0l160 160z">
@@ -348,7 +348,7 @@
                   </h3>
                 </div>
                 <p style="margin: 0;">
-                  It's crafted for ease of understanding, ensuring a smooth learning journey.
+                  It’s crafted for a smooth learning experience.
                 </p>
                 <p class="intro-quote">
                   "A picture is worth a thousand words."
@@ -371,7 +371,7 @@
                   </h3>
                 </div>
                 <p style="margin: 0;">
-                  Featuring multiple programming languages, all runnable with a single click.
+                  One click to run code in multiple languages.
                 </p>
                 <p class="intro-quote">
                   "Talk is cheap. Show me the code."
@@ -392,7 +392,7 @@
                   </h3>
                 </div>
                 <p style="margin: 0;">
-                  Welcome discussions and questions with open arms.
+                  Don’t hesitate to ask or share your thoughts.
                 </p>
                 <p class="intro-quote">
                   "Learning by teaching."
diff --git a/en/sitemap.xml b/en/sitemap.xml
index e6337caa4..fafc9d322 100644
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 }
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 }
 
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-         <lastmod>2025-01-13</lastmod>
+         <lastmod>2025-01-14</lastmod>
          <changefreq>daily</changefreq>
     </url>
 </urlset>
\ No newline at end of file
diff --git a/zh-hant/sitemap.xml.gz b/zh-hant/sitemap.xml.gz
index bf6ab54d0..fa802ca5c 100644
Binary files a/zh-hant/sitemap.xml.gz and b/zh-hant/sitemap.xml.gz differ
diff --git a/zh-hant/stylesheets/extra.css b/zh-hant/stylesheets/extra.css
index 04201732a..7d6c9c1d8 100644
--- a/zh-hant/stylesheets/extra.css
+++ b/zh-hant/stylesheets/extra.css
@@ -305,7 +305,7 @@ body {
 
 a:hover .device-on-hover {
   filter: drop-shadow(0 0 0.2rem rgba(0, 0, 0, 0.15));
-  transform: scale(1.02);
+  transform: scale(1.01);
 }
 
 /* text button */
@@ -424,7 +424,7 @@ a:hover .text-button span {
 .intro-image {
   flex-shrink: 0;
   flex-grow: 0;
-  width: 55%;
+  width: 50%;
   border-radius: 0.5em;
   box-shadow: var(--md-shadow-z2);
 }
@@ -498,12 +498,16 @@ a:hover .text-button span {
   }
 }
 
-/* Hide table of contents */
+/* mobile devices */
 @media screen and (max-width: 60em) {
   .home-div {
     font-size: 0.75rem;
   }
 
+  .heading-div {
+    transform: translateX(-50%) translateY(13%);
+  }
+
   .intro-container {
     flex-direction: column;
   }