diff --git a/package.json b/package.json
index 4a9118b..6bfab0b 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "hexo-theme-butterfly",
-  "version": "3.8.1",
+  "version": "3.8.2",
   "description": "A Simple and Card UI Design theme for Hexo",
   "main": "package.json",
   "scripts": {
diff --git a/source/css/_layout/head.styl b/source/css/_layout/head.styl
index cefba44..bcd740a 100644
--- a/source/css/_layout/head.styl
+++ b/source/css/_layout/head.styl
@@ -9,7 +9,7 @@
 
   // index
   &.full_page
-    min-height: $index_top_img_height
+    height: $index_top_img_height
     background-attachment: fixed
 
     #site-info
@@ -70,7 +70,7 @@
 
   // page
   &.not-home-page
-    min-height: 20rem
+    height: 20rem
 
     +maxWidth768()
       height: 14rem
@@ -86,7 +86,7 @@
 
   // post
   &.post-bg
-    min-height: 20rem
+    height: 20rem
 
     +maxWidth768()
       height: 18rem
@@ -118,7 +118,7 @@
 
   &.not-top-img
     margin-bottom: .5rem
-    min-height: 60px
+    height: 60px
     background: 0
 
     #nav
diff --git a/source/css/_page/common.styl b/source/css/_page/common.styl
index 4076804..c695216 100644
--- a/source/css/_page/common.styl
+++ b/source/css/_page/common.styl
@@ -1,7 +1,7 @@
 #body-wrap
   display: flex
   flex-direction: column
-  height: 100vh
+  min-height: 100vh
 
 .layout
   display: flex
diff --git a/source/css/var.styl b/source/css/var.styl
index 6205406..87e1503 100644
--- a/source/css/var.styl
+++ b/source/css/var.styl
@@ -33,7 +33,7 @@ $font-color = #1F2D3D
 $rem = 20px
 $text-line-height = 2
 $web-bg = hexo-config('background') && unquote(hexo-config('background'))
-$index_top_img_height = hexo-config('index_top_img_height') ? convert(hexo-config('index_top_img_height')) : 100%
+$index_top_img_height = hexo-config('index_top_img_height') ? convert(hexo-config('index_top_img_height')) : 100vh
 $index_site_info_top = hexo-config('index_site_info_top') ? convert(hexo-config('index_site_info_top')) : 43%
 // Global color & SVG
 $light-blue = $theme-color