去掉表格语音作答下划线

src/views/book/courseware/preview/components/table/TablePreview.vue

@@ -1354,7 +1354,8 @@ $border-color: #e6e6e6;
         display: inline-flex;
         align-items: center;
         background-color: #fff;
-        border-bottom: 1px solid $font-color;
+
+        // border-bottom: 1px solid $font-color;
 
         :deep(.playBack) {
           width: 20px;