diff --git a/themes/yilia/source-src/css/grid.scss b/themes/yilia/source-src/css/grid.scss
index 4db09be..960b8ee 100644
--- a/themes/yilia/source-src/css/grid.scss
+++ b/themes/yilia/source-src/css/grid.scss
@@ -22,7 +22,7 @@ html, body, #container {
 	min-height:100%;
   scroll-behavior: smooth;
 	-webkit-overflow-scrolling: touch;
-	background: $colorBodyBg url(http://photo.colorfulsweet.site/2019/08/29/4f8a91881d2a4.png) no-repeat;
+	background: $colorBodyBg url(./img/ctn_bg.png) no-repeat;
 	background-size: contain;
 	background-position: right;
 	overflow-scrolling: touch;
diff --git a/themes/yilia/source-src/css/img/ctn_bg.png b/themes/yilia/source-src/css/img/ctn_bg.png
new file mode 100644
index 0000000..ce04416
Binary files /dev/null and b/themes/yilia/source-src/css/img/ctn_bg.png differ
diff --git a/themes/yilia/source-src/css/img/left_bg.jpg b/themes/yilia/source-src/css/img/left_bg.jpg
deleted file mode 100644
index d5b3b30..0000000
Binary files a/themes/yilia/source-src/css/img/left_bg.jpg and /dev/null differ
diff --git a/themes/yilia/source-src/css/img/left_bg.png b/themes/yilia/source-src/css/img/left_bg.png
new file mode 100644
index 0000000..c3ce242
Binary files /dev/null and b/themes/yilia/source-src/css/img/left_bg.png differ
diff --git a/themes/yilia/source-src/css/left.scss b/themes/yilia/source-src/css/left.scss
index da07e81..26f1aae 100644
--- a/themes/yilia/source-src/css/left.scss
+++ b/themes/yilia/source-src/css/left.scss
@@ -1,6 +1,7 @@
 .left-col {
-  background: $colorBg url(./img/left_bg.jpg) no-repeat;
-  background-size: cover;
+  background: $colorBg url(./img/left_bg.png) no-repeat;
+	background-size: cover;
+	background-position: top;
 	width: 300px;
 	position:fixed;
 	opacity:1;