修改格式

src/components/study.vue

@@ -1545,7 +1545,7 @@
                 </div>
                 <input
                   type="file"
-                  accept="application/pdf, application/.ppt, .pptx, .xlsx, .xls, application/msword, application/vnd.openxmlformats-officedocument.wordprocessingml.document, image/png, image/gif, image/jpeg"
+                  accept="*"
                   style="display: none"
                   @change="beforeUpload1($event, 1)"
                 />