diff --git a/assets/css/common/main.css b/assets/css/common/main.css
index 8d798f5..893081f 100644
--- a/assets/css/common/main.css
+++ b/assets/css/common/main.css
@@ -15,7 +15,7 @@
 
 /* same as .post-header */
 .page-header {
-    margin: var(--gap) 0 calc(var(--content-gap) * 1.5);
+    margin: var(--content-gap) 0 calc(var(--content-gap) * 1.5);
 }
 
 .mark-line {
diff --git a/assets/css/common/post-single.css b/assets/css/common/post-single.css
index 03104b6..7095192 100644
--- a/assets/css/common/post-single.css
+++ b/assets/css/common/post-single.css
@@ -1,5 +1,5 @@
 .post-header {
-    margin: var(--gap) 0 calc(var(--content-gap) * 1.5);
+    margin: var(--content-gap) 0 calc(var(--content-gap) * 1.5);
 }
 
 .post-title {
diff --git a/assets/css/extended/newsletter.scss b/assets/css/extended/newsletter.scss
index 97bfa9c..a1a8fef 100644
--- a/assets/css/extended/newsletter.scss
+++ b/assets/css/extended/newsletter.scss
@@ -94,7 +94,7 @@ body.type-newsletter.layout-archives {
   .main {
     border: var(--main-border);
     background-color: var(--theme);
-    margin-top: var(--gap);
+    margin-top: var(--content-gap);
     padding-top: 0;
     padding-bottom: var(--icon-length);
     min-height: calc(100vh - var(--header-height) - var(--footer-height) - var(--content-gap));