画板上传的图片在框里显示全

src/views/book/courseware/create/components/question/drawing/Drawing.vue

@@ -329,7 +329,7 @@ export default {
       / 2px auto 2px;
 
     img {
-      object-fit: cover;
+      object-fit: contain;
     }
 
     .horizontal-line,