update

src/modules/course/my/components/ViewDetailsVideo.vue

@@ -57,7 +57,7 @@ const changeVideo = (index: number) => {
         :key="item.id"
         @click="changeVideo(index)"
       >
-        <div :class="item.id === props.data.currentId ? 'border active' : 'border'"></div>
+        <div :class="index === videoIndex ? 'border active' : 'border'"></div>
       </div>
     </div>
   </div>
@@ -71,6 +71,7 @@ const changeVideo = (index: number) => {
   height: 100px;
   background-size: cover;
   margin-right: 20px;
+  margin-top: 20px;
   cursor: pointer;
   .border {
     width: 100%;