修改课程封面显示问题

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

@@ -113,6 +113,9 @@ const statusStyle = (item: any) => {
 <template>
   <div class="top-info">
     <div class="cover">
+      <img
+        :src="props.data.cover || 'https://webapp-pub.oss-cn-beijing.aliyuncs.com/center_resource/course_default.png'"
+      />
       <el-popover trigger="hover" placement="right">
         <div v-html="props.data.name"></div>
         <template #reference>
@@ -177,10 +180,13 @@ const statusStyle = (item: any) => {
   .cover {
     min-width: 240px;
     height: 180px;
-    background: url(https://webapp-pub.oss-cn-beijing.aliyuncs.com/center_resource/course_default.png);
     background-size: cover;
-    border-radius: 6px;
     position: relative;
+    img {
+      width: 100%;
+      height: 100%;
+      border-radius: 6px;
+    }
     .cover-name {
       position: absolute;
       top: 50%;