diff --git a/themes/yilia/source-src/css/grid.scss b/themes/yilia/source-src/css/grid.scss
index 960b8ee..aa95984 100644
--- a/themes/yilia/source-src/css/grid.scss
+++ b/themes/yilia/source-src/css/grid.scss
@@ -22,10 +22,10 @@ html, body, #container {
 	min-height:100%;
   scroll-behavior: smooth;
 	-webkit-overflow-scrolling: touch;
-	background: $colorBodyBg url(./img/ctn_bg.png) no-repeat;
+	background: $colorBodyBg url(/api/common/randomBg) no-repeat;
 	background-size: contain;
 	background-position: right;
-	overflow-scrolling: touch;
+	// overflow-scrolling: touch;
   &.show {
 		overflow-y: hidden;
   }
diff --git a/themes/yilia/source-src/js/slider.js b/themes/yilia/source-src/js/slider.js
index 7e3f2f7..41b99d4 100644
--- a/themes/yilia/source-src/js/slider.js
+++ b/themes/yilia/source-src/js/slider.js
@@ -174,9 +174,9 @@ const vm = new Vue({
     }).catch(err => {
       console.warn('加载文章列表失败')
     })
-    welcomeMessage().then(msg => {
+    welcomeMessage().then((function(msg) {
       this.showMessage(msg, 6000)
-    })
+    }).bind(this))
     document.addEventListener('copy', () => {
       this.showMessage('你都复制了些什么呀，转载要记得加上出处哦')
     })