diff --git a/.clang-format b/.clang-format
index 363922fdb..aa5c1ea34 100644
--- a/.clang-format
+++ b/.clang-format
@@ -1,7 +1,8 @@
+
 # This file is a part of Simple-XX/SimpleKernel
 # (https://github.com/Simple-XX/SimpleKernel).
 #
-# CMakeLists.txt for Simple-XX/SimpleKernel.
+# .clang-format for Simple-XX/SimpleKernel.
 
 ---
 # @version clang-format version 15
diff --git a/.idea/codeStyles/Project.xml b/.idea/codeStyles/Project.xml
index f60388162..be4d92615 100644
--- a/.idea/codeStyles/Project.xml
+++ b/.idea/codeStyles/Project.xml
@@ -1,5 +1,7 @@
 <component name="ProjectCodeStyleConfiguration">
   <code_scheme name="Project" version="173">
+    <option name="RIGHT_MARGIN" value="80" />
+    <option name="SOFT_MARGINS" value="80" />
     <clangFormatSettings>
       <option name="ENABLED" value="true" />
     </clangFormatSettings>