label: 3.2.0

fix: 修復當hexo的_config沒有設置description時，會導致pjax在頁面與文章間切換會無效 close #381
improvement: 當隱藏部分沒配置時，左下角設置按鈕會消失 #353
improvement: 網站背景可配置 （顏色（HEX值/RGB值/顔色單詞/漸變色)/漸變色/圖片鏈接）
improvement: 夜間模式下，背景顔色/top-img/footer-bg 設置為顔色時，不再強制顯示黑色，而是改為遮罩降低亮度

source/css/_layout/head.styl

@@ -2,7 +2,6 @@
   position: relative
   width: 100%
   background-color: $light-blue
-  background-attachment: scroll
   background-position: center center
   background-size: cover
   background-repeat: no-repeat

source/css/_mode/darkmode.styl

@@ -28,21 +28,15 @@ if hexo-config('darkmode.enable') || hexo-config('display_mode') == 'dark'
     --reward-pop: lighten(#121212, 10)
     --sidebar-icon-color: alpha(#FFFFFF, .7)
 
-    // 網站背景，footer背景
-    #web_bg[data-type=color]
-      background: darken(#121212, 2)
-
-    #web_bg[data-type=photo]:before
+    #web_bg:before,
+    #footer:before,
+    #page-header:before
       position: absolute
       width: 100%
       height: 100%
       background-color: alpha($dark-black, .7)
       content: ''
 
-    #footer
-      &:before
-        background-color: alpha($dark-black, .7)
-
     #article-container
       code
         background: #2c2c2c
@@ -56,16 +50,6 @@ if hexo-config('darkmode.enable') || hexo-config('display_mode') == 'dark'
 
     // 頭部
     #page-header
-      &:before
-        position: absolute
-        top: 0
-        left: 0
-        display: block
-        width: 100%
-        height: 100%
-        background-color: alpha($dark-black, .7)
-        content: ''
-
       & > #nav.fixed,
       &.no-top-img #nav
         background: alpha(#121212, .8)
@@ -165,5 +149,6 @@ if hexo-config('darkmode.enable') || hexo-config('display_mode') == 'dark'
 
     #artitalk_main #lazy
       background: #121212
+
     #operare_artitalk .c2
       background: #121212

source/css/var.styl

@@ -32,7 +32,7 @@ $code-font-size = hexo-config('font.code-font-size') ? convert(hexo-config('font
 $font-color = #1F2D3D
 $rem = 20px
 $text-line-height = 2
-$web-bg = hexo-config('background') && convert(hexo-config('background'))
+$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')) : 100vh
 $index_site_info_top = hexo-config('index_site_info_top') ? convert(hexo-config('index_site_info_top')) : 43%
 // Global color & SVG