2.4

themes/light/source/css/_base/layout.styl

@@ -4,9 +4,12 @@
   font-family "Microsoft YaHei" !important
 
 body
-  background color-background
-  background-size cover
+  background-image img-background
+  background-color color-background
   background-attachment fixed
+  background-repeat no-repeat
+  background-position center
+  background-size cover
   color color-font
   font-family font-default
   font-size 14px
@@ -16,6 +19,7 @@ body
   @media screen and (max-width: 600px)
     font-size 13px
 
+
 h1, h2, h3, h4, h5, h6
   font-family font-title
 

themes/light/source/css/_base/variable.styl

 // Color
-color-background = url(images/body.jpg) no-repeat
+color-background = rgb(5,10,16)
 color-font = #fff
 color-meta = #fff
 color-border = #ddd
 color-link = #0cf
+img-background = url(images/body.jpg)
 
 // Font
 font-default = "Helvetica Neue", "Helvetica", Arial, sans-serif