diff --git a/Korean/04_strings_ko.md b/Korean/04_strings_ko.md
index b2d92de..dc74f7c 100644
--- a/Korean/04_strings_ko.md
+++ b/Korean/04_strings_ko.md
@@ -1,5 +1,5 @@
 <div align="center">
-<h> 30 Days Of Python: Day 4 - Strings</h> <a class="header-badge" target="_blank" href="https://www.linkedin.com/in/asabeneh/"> <img src="https://img.shields.io/badge/style--5eba00.svg?label=LinkedIn&amp;logo=linkedin&amp;style=social"> </a> <a class="header-badge" target="_blank" href="https://twitter.com/Asabeneh"> <img src="https://img.shields.io/twitter/follow/asabeneh?style=social" alt="Twitter Follow"> </a>
+<h1> 30 Days Of Python: Day 4 - Strings</h1> <a class="header-badge" target="_blank" href="https://www.linkedin.com/in/asabeneh/"> <img src="https://img.shields.io/badge/style--5eba00.svg?label=LinkedIn&amp;logo=linkedin&amp;style=social"> </a> <a class="header-badge" target="_blank" href="https://twitter.com/Asabeneh"> <img src="https://img.shields.io/twitter/follow/asabeneh?style=social" alt="Twitter Follow"> </a>
 </div>
 <p data-md-type="paragraph"><sub data-md-type="raw_html">Author: <a data-md-type="raw_html" href="https://www.linkedin.com/in/asabeneh/" target="_blank">Asabeneh Yetayeh</a><br> <small data-md-type="raw_html"> Second Edition: July, 2021</small></sub></p>
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diff --git a/Korean/07_sets_ko.md b/Korean/07_sets_ko.md
index 46092fb..815f51e 100644
--- a/Korean/07_sets_ko.md
+++ b/Korean/07_sets_ko.md
@@ -1,4 +1,4 @@
-<div align="center">   <h> 30 Days Of Python: Day 7 - Sets</h>   <a class="header-badge" target="_blank" href="https://www.linkedin.com/in/asabeneh/">   <img src="https://img.shields.io/badge/style--5eba00.svg?label=LinkedIn&amp;logo=linkedin&amp;style=social">   </a>   <a class="header-badge" target="_blank" href="https://twitter.com/Asabeneh">   <img src="https://img.shields.io/twitter/follow/asabeneh?style=social" alt="Twitter Follow">   </a>
+<div align="center">   <h1> 30 Days Of Python: Day 7 - Sets</h1>   <a class="header-badge" target="_blank" href="https://www.linkedin.com/in/asabeneh/">   <img src="https://img.shields.io/badge/style--5eba00.svg?label=LinkedIn&amp;logo=linkedin&amp;style=social">   </a>   <a class="header-badge" target="_blank" href="https://twitter.com/Asabeneh">   <img src="https://img.shields.io/twitter/follow/asabeneh?style=social" alt="Twitter Follow">   </a>
 </div>
 <p data-md-type="paragraph"><sub data-md-type="raw_html">Author: <a data-md-type="raw_html" href="https://www.linkedin.com/in/asabeneh/" target="_blank">Asabeneh Yetayeh</a><br> <small data-md-type="raw_html"> Second Edition: July, 2021</small></sub></p>
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diff --git a/Korean/10_loops_ko.md b/Korean/10_loops_ko.md
index 8b88fd8..408d943 100644
--- a/Korean/10_loops_ko.md
+++ b/Korean/10_loops_ko.md
@@ -1,4 +1,4 @@
-<div align="center">   <h> 30 Days Of Python: Day 10 - Loops</h>   <a class="header-badge" target="_blank" href="https://www.linkedin.com/in/asabeneh/">   <img src="https://img.shields.io/badge/style--5eba00.svg?label=LinkedIn&amp;logo=linkedin&amp;style=social">   </a>   <a class="header-badge" target="_blank" href="https://twitter.com/Asabeneh">   <img src="https://img.shields.io/twitter/follow/asabeneh?style=social" alt="Twitter Follow">   </a>
+<div align="center">   <h1> 30 Days Of Python: Day 10 - Loops</h1>   <a class="header-badge" target="_blank" href="https://www.linkedin.com/in/asabeneh/">   <img src="https://img.shields.io/badge/style--5eba00.svg?label=LinkedIn&amp;logo=linkedin&amp;style=social">   </a>   <a class="header-badge" target="_blank" href="https://twitter.com/Asabeneh">   <img src="https://img.shields.io/twitter/follow/asabeneh?style=social" alt="Twitter Follow">   </a>
 </div>
 <p data-md-type="paragraph"><sub data-md-type="raw_html">Author: <a data-md-type="raw_html" href="https://www.linkedin.com/in/asabeneh/" target="_blank">Asabeneh Yetayeh</a><br> <small data-md-type="raw_html"> Second Edition: July, 2021</small></sub></p>
 <div data-md-type="block_html"></div>