diff --git a/_config.butterfly.yml b/_config.butterfly.yml
index a2a05df8..0b92a332 100644
--- a/_config.butterfly.yml
+++ b/_config.butterfly.yml
@@ -97,7 +97,7 @@ avatar:
 disable_top_img: false
 
 # The banner image of home page 首页的横幅图像
-index_img: /img/朋克阳台.jpg
+index_img: /img/朋克阳台.png
 
 # If the banner of page not setting, it will show the top_img
 # 如果页面的横幅没有设置，它将显示top_img
@@ -522,7 +522,7 @@ tag_ui: # 留空或 index
 # Website Background (设置网站背景)
 # can set it to color or image (可设置图片 或者 颜色)
 # The formal of image: url(http://xxxxxx.com/xxx.jpg)
-background: /img/朋克屋顶.jpg
+background: url(/img/朋克屋顶.jpg)
 
 # Footer Background
 footer_bg:
diff --git a/themes/butterfly/source/css/_layout/footer.styl b/themes/butterfly/source/css/_layout/footer.styl
index 4a2160e2..8ba138a4 100644
--- a/themes/butterfly/source/css/_layout/footer.styl
+++ b/themes/butterfly/source/css/_layout/footer.styl
@@ -17,11 +17,11 @@
 #footer-wrap
   position: relative
   padding: 10px 50px
-  color: var(--dark-black)
+  color: var(--light-grey)
   text-align: center
 
   a
-    color: var(--dark-black)
+    color: var(--light-grey)
 
     &:hover
       text-decoration: underline