模块列表及其下面的元件列表

src/components/course/download-button.vue

@@ -30,7 +30,7 @@ export default {
 .download-button-wrapper {
   display: flex;
   // width: 100%;
-  position: absolute;
+  position: fixed;
   z-index: 1000;
   top: 15px;
   right: 0;

src/components/course/pica-video.vue

@@ -453,7 +453,7 @@ export default {
   height: 100%;
   background-color: #333;
   overflow: hidden;
-  z-index: 999;
+  z-index: 1000;
   video{
     position: absolute;
     left: 50%;

src/views/share-merge-detail.vue

 <template>
   <!-- 组件详情页面：模块列表及其下面的元件列表 -->
-  <div class="page-container-merge">
+  <div class="page-container-merge" >
     <CommonNavbar
       id="header"
       :bgColor="bgColor"