update

src/components/pages/addCourse.vue

@@ -1277,7 +1277,7 @@
                       </div>
                     </div>
                     <div
-                      class="add_info_box add_info_box2"
+                      class="add_info_box"
                       style="margin: 10px 0 0"
                     >
                       <button class="info_btn" @click="addImg($event)">