diff --git a/themes/mytheme/assets/css/common/header.css b/themes/mytheme/assets/css/common/header.css
index c1c6de8..2c3cf09 100644
--- a/themes/mytheme/assets/css/common/header.css
+++ b/themes/mytheme/assets/css/common/header.css
@@ -23,8 +23,8 @@
 }
 
 .logo a {
-    font-size: 16px;
-    font-weight: 500;
+    font-size: 18px;
+    font-weight: 600;
 }
 
 .logo a img, .logo a svg {
diff --git a/themes/mytheme/assets/css/common/post-single.css b/themes/mytheme/assets/css/common/post-single.css
index 729b631..a391915 100644
--- a/themes/mytheme/assets/css/common/post-single.css
+++ b/themes/mytheme/assets/css/common/post-single.css
@@ -48,16 +48,16 @@
 
 .post-content h1 {
     margin: 40px auto 32px;
-    font-size: 28px;
+    font-size: 26px;
 }
 
 .post-content h2 {
     margin: 32px auto 24px;
-    font-size: 26px;
+    font-size: 24px;
 }
 
 .post-content h3 {
-    font-size: 24px;
+    font-size: 18px;
 }
 
 .post-content h4 {