去除部分预览背景色

src/views/book/courseware/create/components/base/common/UploadFile.vue

@@ -422,6 +422,7 @@ export default {
                 file_id: file_info_list[0].file_id,
                 file_name: file_info_list[0].file_name,
                 file_url: file_info_list[0].file_url,
+                media_duration: file_info_list[0].media_duration,
               };
               if (this.canEditName) {
                 let obj = {

src/views/book/courseware/preview/components/article/components/AudioLineSentence.vue

@@ -331,7 +331,8 @@ export default {
     align-items: center;
     width: 100%;
     height: 40px;
-    background: #fff;
+
+    // background: #fff;
     border-radius: 4px;
 
     &-green {

src/views/book/courseware/preview/components/character_structure/CharacterStructurePreview.vue

@@ -448,7 +448,8 @@ export default {
 
     // padding: 5px;
     overflow: hidden;
-    background: #fff;
+
+    // background: #fff;
     background-size: cover;
     border: 2px solid #346cda;
     border-radius: 4px;

src/views/book/courseware/preview/components/video_interaction/VideoInteractionPreview.vue

@@ -154,7 +154,7 @@ export default {
       let options = {
         autoplay: false, //自动播放
         height: 500,
-        width: 918,
+        width: 1000,
         controls: true, //用户可以与之交互的控件
         loop: true, //视频一结束就重新开始
         muted: false, //默认情况下将使所有音频静音

src/views/book/courseware/preview/components/voice_matrix/components/AudioLine.vue

@@ -368,7 +368,8 @@ export default {
     align-items: center;
     width: 100%;
     height: 40px;
-    background: #fff;
+
+    // background: #fff;
     border-radius: 8px;
 
     .playBox {