diff --git a/source/css/_layout/main.styl b/source/css/_layout/main.styl
index 5e8633f..f3f391b 100644
--- a/source/css/_layout/main.styl
+++ b/source/css/_layout/main.styl
@@ -1,9 +1,9 @@
 .l_main
   position: relative
   padding-bottom: "calc(1 * %s)" % var(--gap-l)
-  @media screen and (min-width: 1200px)
+  @media screen and (min-width: 1280px)
     margin-left: "calc(2 * %s)" % var(--gap-l)
-    margin-right: "calc(0.75 * %s)" % var(--width-left)
+    margin-right: "calc(2 * %s + %s)" % (var(--gap-l) var(--width-left))
   @media screen and (min-width: $device-tablet)
     padding-top: "calc(2 * %s)" % var(--gap-l)
   header
diff --git a/source/css/_layout/partial/cover.styl b/source/css/_layout/partial/cover.styl
index 3e4dba2..e4a3867 100644
--- a/source/css/_layout/partial/cover.styl
+++ b/source/css/_layout/partial/cover.styl
@@ -31,16 +31,30 @@
 
 .l_cover.post
   .cover
-    width: 100%
-    height: 35vh
     z-index: -1
+    width: 100%
+    height: 30vh
+    max-width: $device-2k
+    min-height: 150px
+    max-height: 400px
+    @media screen and (max-width: $device-tablet)
+      height: 25vh
+    @media screen and (max-width: $device-mobile)
+      height: 20vh
+    @media screen and (min-width: $device-2k)
+      margin-top: 4rem
+      .img
+        border-radius: 2rem
+
 
 .l_cover.post .cover-wrap
   z-index: 1
   .article-title
     text-align: center
     padding: 1rem
-    margin: 1em 0
+    margin: 1em 0 0 0
+    @media screen and (min-width: $device-2k)
+      font-size: 3rem
 
 
 .l_cover.wiki .cover-wrap