diff --git a/src/assets/styles/portal.scss b/src/assets/styles/portal.scss
index 59e632e0..f0d29bcb 100644
--- a/src/assets/styles/portal.scss
+++ b/src/assets/styles/portal.scss
@@ -278,7 +278,7 @@ body {margin: 0px;padding: 0px;}
     width: 1100px;
   }
   .xcontent2-minor{
-    width: 234px;
+    width: 260px;
   }
   .portal-ranking{
     padding: 20px 15px;
diff --git a/src/views/portal/course/Index.vue b/src/views/portal/course/Index.vue
index 1ddfdf28..a6830b0c 100644
--- a/src/views/portal/course/Index.vue
+++ b/src/views/portal/course/Index.vue
@@ -452,6 +452,7 @@ export default {
         .clientHeight;
       let outerHeight = document.documentElement.clientHeight;
       let scrollTop = document.documentElement.scrollTop;
+      let outerWidth = document.querySelector(".xcontent2-minor").clientWidth;
       if (outerHeight + scrollTop + 350 >= innerHeight) {
         if (this.moreState == 1 && this.course.pageIndex < 4) {
           this.loadMore();
@@ -459,7 +460,7 @@ export default {
       }
       if (scrollTop > 830) {
         document.querySelector("#fixd-box").style.cssText =
-          "position: fixed;top: -914px;";
+          "position: fixed;top: -914px;width:"+outerWidth+"px";
       } else {
         document.querySelector("#fixd-box").style.cssText = "position: static";
       }